Maya Script: History
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Maya script, also known as Maya glyphs, was the writing system of the Maya civilization of Mesoamerica and is the only Mesoamerican writing system that has been substantially deciphered. The earliest inscriptions found which are identifiably Maya date to the 3rd century BCE in San Bartolo, Guatemala. Maya writing was in continuous use throughout Mesoamerica until the Spanish conquest of the Maya in the 16th and 17th centuries. Maya writing used logograms complemented with a set of syllabic glyphs, somewhat similar in function to modern Japanese writing. Maya writing was mistakenly called "hieroglyphics" or hieroglyphs by early European explorers of the 18th and 19th centuries who found its general appearance reminiscent of Egyptian hieroglyphs, although the two systems are unrelated. Modern Mayan languages are written using the Latin alphabet rather than Maya script.

  • hieroglyphics
  • mesoamerica
  • glyphs

1. Languages

Evidence suggests that codices and other classic texts were written by scribes—usually members of the Maya priesthood—in Classic Maya, a literary form of the extinct Chʼoltiʼ language.[1][2] It is possible that the Maya elite spoke this language as a lingua franca over the entire Maya-speaking area, but texts were also written in other Mayan languages of the Petén and Yucatán, especially Yucatec. There is also some evidence that the script may have been occasionally used to write Mayan languages of the Guatemalan Highlands.[2] However, if other languages were written, they may have been written by Chʼoltiʼ scribes, and therefore have Chʼoltiʼ elements.

2. Structure

Two different ways of writing the word bʼalam "jaguar" in the Maya script. First as logogram representing the entire word with the single glyph bʼalam, then phonetically using the three syllable signs bʼa, la, and ma.;
Three ways to write bʼalam using combinations of the logogram with the syllabic signs as phonetic complements.;;
Maya inscriptions were most often written in columns two glyphs wide, with each successive pair of columns read left to right, top to bottom;

Mayan writing consisted of a relatively elaborate set of glyphs, which were laboriously painted on ceramics, walls and bark-paper codices, carved in wood and stone, and molded in stucco. Carved and molded glyphs were painted, but the paint has rarely survived. (As of 2008), the sound of about 80% of Maya writing could be read and the meaning of about 60% could be understood with varying degrees of certainty, enough to give a comprehensive idea of its structure.[3]

Maya texts were usually written in blocks arranged in columns two blocks wide, with each block corresponding to a noun or verb phrase. The blocks within the columns were read left to right, top to bottom, and would be repeated until there were no more columns left. Within a block, glyphs were arranged top-to-bottom and left-to-right (similar to Korean Hangul syllabic blocks). Glyphs were sometimes conflated into ligatures, where an element of one glyph would replace part of a second. In place of the standard block configuration, Maya was also sometimes written in a single row or column, or in an 'L' or 'T' shape. These variations most often appeared when they would better fit the surface being inscribed.

The Maya script was a logosyllabic system with some syllabogrammatic elements. Individual glyphs or symbols could represent either a morpheme or a syllable, and the same glyph could often be used for both. Because of these dual readings, it is customary to write logographic readings in all caps and phonetic readings in italics or bold. For example, a calendaric glyph can be read as the morpheme manikʼ or as the syllable chi.

Glyphs used as syllabograms were originally logograms for single-syllable words, usually those that ended in a vowel or in a weak consonant such as y, w, h, or glottal stop. For example, the logogram for 'fish fin'—found in two forms, as a fish fin and as a fish with prominent fins—was read as [kah] and came to represent the syllable ka. These syllabic glyphs performed two primary functions: as phonetic complements to disambiguate logograms which had more than one reading (similar to ancient Egyptian and modern Japanese furigana); and to write grammatical elements such as verbal inflections which did not have dedicated logograms (similar to Japanese okurigana). For example, bʼalam 'jaguar' could be written as a single logogram, bʼalam; a logogram with syllable additions, as ba-bʼalam, or bʼalam-ma, or bʼa-bʼalam-ma; or written completely phonetically with syllabograms as bʼa-la-ma.

In addition, some syllable glyphs were homophones, such as the six different glyphs used to write the very common third person pronoun u-.

2.1. Harmonic and Disharmonic Echo Vowels

Yucatec Maya writing in the Dresden Codex, c. 11–12th century, Chichen Itza;

Phonetic glyphs stood for simple consonant-vowel (CV) or vowel-only (V) syllables. However, Mayan phonotactics is slightly more complicated than this. Most Mayan words end with consonants, and there may be sequences of two consonants within a word as well, as in xolteʼ ([ʃolteʔ] 'scepter') which is CVCCVC. When these final consonants were sonorants (l, m, n) or gutturals (j, h, ʼ) they were sometimes ignored ("underspelled"). More often, final consonants were written, which meant that an extra vowel was written as well. This was typically an "echo" vowel that repeated the vowel of the previous syllable. For example, the word [kah] 'fish fin' would be underspelled ka or written in full as ka-ha. However, there are many cases where some other vowel was used, and the orthographic rules for this are only partially understood; this is largely due to the difficulty in ascertaining whether this vowel may be due to an underspelled suffix.

(Lacadena Wichmann) proposed the following conventions:

  • A CVC syllable was written CV-CV, where the two vowels (V) were the same: yo-po [yop] 'leaf'
  • A syllable with a long vowel (CVVC) was written CV-Ci, unless the long vowel was [i], in which case it was written CiCa: ba-ki [baak] 'captive', yi-tzi-na [yihtziin] 'younger brother'
  • A syllable with a glottalized vowel (CVʼC or CVʼVC) was written with a final a if the vowel was [e, o, u], or with a final u if the vowel was [a] or [i]: hu-na [huʼn] 'paper', ba-tzʼu [baʼtsʼ] 'howler monkey'.
  • Preconsonantal [h] is not indicated.

In short, if the vowels are the same (harmonic), a simple vowel is intended. If the vowels are not the same (disharmonic), either two syllables are intended (likely underspelled), or else a single syllable with a long vowel (if V1 = [a e? o u] and V2 = [i], or else if V1 = [i] and V2 = [a]) or with a glottalized vowel (if V1 = [e? o u] and V2 = [a], or else if V1 = [a i] and V2 = [u]). The long-vowel reading of [Ce-Ci] is still uncertain, and there is a possibility that [Ce-Cu] represents a glottalized vowel (if it is not simply an underspelling for [CeCuC]), so it may be that the disharmonies form natural classes: [i] for long non-front vowels, otherwise [a] to keep it disharmonic; [u] for glottalized non-back vowels, otherwise [a].

A more complex spelling is ha-o-bo ko-ko-no-ma for [haʼoʼb kohknoʼm] 'they are the guardians'.[4] A minimal set is,

ba-ka [bak]
ba-ki [baak]
ba-ku [baʼk] = [baʼak]
ba-ke [baakel] (underspelled)
ba-ke-le [baakel]

2.2. Verbal Inflections

Despite depending on consonants which were frequently not written, the Mayan voice system was reliably indicated. For instance, the paradigm for a transitive verb with a CVC root is as follows:

Verbal inflections in Mayan writing
Voice Transliteration Transcription Gloss
Active u-TZUTZ-wa utzutzuʼw "(s)he finished it"
Passive TZUTZ-tza-ja tzu⟨h⟩tzaj "it was finished"
Mediopassive TZUTZ-yi tzutzuuy "it got finished"
Antipassive TZUTZ-wi tzutzuuw "(s)he finished"
Participial TZUTZ-li tzutzuul "finished"

The active suffix did not participate in the harmonic/disharmonic system seen in roots, but rather was always -wa.

However, the language changed over 1500 years, and there were dialectal differences as well, which are reflected in the script, as seen next for the verb "(s)he sat" (⟨h⟩ is an infix in the root chum for the passive voice):

Change in passive voice for chum
Period Transliteration Transcription
Late Preclassic CHUM? chu⟨h⟩m?
Early Classic CHUM-ja chu⟨h⟩m-aj
Classic (Eastern Chʼolan) CHUM-mu-la-ja chum-l-aj
Late Classic (Western Chʼolan) CHUM-mu-wa-ni chum-waan

3. Emblem Glyphs

Tikal or "Mutal" Emblem Glyph, Stela 26 in Tikal's Litoteca Museum;
An inscription in Maya glyphs from the site of Naranjo, relating to the reign of king Itzamnaaj Kʼawil, 784–810;

An "emblem glyph" is a kind of royal title. It consists of a place name followed by the word ajaw, a Classic Maya term for "lord" with an unclear but well-attested etymology.[5] Sometimes the title is introduced by an adjective kʼuhul ("holy, divine" or "sacred"), as if someone wanted to say "holy #placename lord". However, an "emblem glyph" is not a "glyph" at all: it can be spelled with any number of syllabic or logographic signs and several alternative spellings are attested for the words kʼuhul and ajaw, which form the stable core of the title. "Emblem glyph" simply reflects the time when Mayanists could not read Classic Maya inscriptions and used a term to isolate specific recurring structural components of the written narratives, and other remaining examples of Maya orthography.

This title was identified in 1958 by Heinrich Berlin, who coined the term "emblem glyph".[6] Berlin noticed that the "emblem glyphs" consisted of a larger "main sign" and two smaller signs now read as kʼuhul ajaw. Berlin also noticed that while the smaller elements remained relatively constant, the main sign changed from site to site. Berlin proposed that the main signs identified individual cities, their ruling dynasties, or the territories they controlled. Subsequently, (Marcus 1976) argued that the "emblem glyphs" referred to archaeological sites, or more so the prominence and standing of the site, broken down in a 5-tiered hierarchy of asymmetrical distribution. Marcus' research assumed that the emblem glyphs were distributed in a pattern of relative site importance depending on broadness of distribution, roughly broken down as follows: Primary regional centers (capitals) (Tikal, Calakmul, and other "superpowers") were generally first in the region to acquire a unique emblem glyph(s). Texts referring to other primary regional centers occur in the texts of these "capitals", and dependencies exist which use the primary center's glyph. Secondary centers (Altun Ha, Lubaantun, Xunantunich, and other mid-sized cities had their own glyphs but are only rarely mentioned in texts found in the primary regional center, while repeatedly mentioning the regional center in their own texts. Tertiary centers (towns) had no glyphs of their own, but have texts mentioning the primary regional centers and perhaps secondary regional centers on occasion. These were followed by the villages with no emblem glyphs and no texts mentioning the larger centers, and hamlets with little evidence of texts at all.[7] This model was largely unchallenged for over a decade until Mathews and Justeson,[8] as well as Houston,[9] argued once again that the "emblem glyphs" were the titles of Maya rulers with some geographical association.

The debate on the nature of "emblem glyphs" received a new spin in (Stuart Houston). The authors demonstrated that there were many place-names-proper, some real, some mythological, mentioned in the hieroglyphic inscriptions. Some of these place names also appeared in the "emblem glyphs", some were attested in the "titles of origin" (various expressions like "a person from Boston"), but some were not incorporated in personal titles at all. Moreover, the authors also highlighted the cases when the "titles of origin" and the "emblem glyphs" did not overlap, building upon Houston's earlier research.[10] Houston noticed that the establishment and spread of the Tikal-originated dynasty in the Petexbatun region was accompanied by the proliferation of rulers using the Tikal "emblem glyph" placing political and dynastic ascendancy above the current seats of rulership.[11] Recent investigations also emphasize the use of emblem glyphs as an emic identifier to shape socio-political self-identity.[12]

4. Numerical System

List of Maya numerals from 0 to 19 with underneath two vertically oriented examples;

The Mayas used a positional base-twenty (vigesimal) numerical system which only included whole numbers. For simple counting operations, a bar and dot notation was used. The dot represents 1 and the bar represents 5. A shell was used to represent zero. Numbers from 6 to 19 are formed combining bars and dots, and can be written horizontally or vertically.

Numbers over 19 are written vertically and read from the bottom to the top as powers of 20. The bottom number represents numbers from 0 to 20, so the symbol shown does not need to be multiplied. The second line from the bottom represents the amount of 20s there are, so that number is multiplied by 20. The third line from the bottom represents the amount of 400s, so it's multiplied by 400; the fourth by 8000; the fifth by 160,000, etc. Each successive line is an additional power of twenty (similar to how in Arabic numerals, additional powers of 10 are added to the right of the first digit). This positional system allows the calculation of large figures, necessary for chronology and astronomy.[13]

5. History

These four examples show how the value of Maya numerals can be calculated.

It was until recently thought that the Maya may have adopted writing from the Olmec or Epi-Olmec culture, who used the Isthmian script. However, murals excavated in 2005 have pushed back the origin of Maya writing by several centuries, and it now seems possible that the Maya were the ones who invented writing in Mesoamerica.[14] Scholarly consensus is that the Maya developed the only complete writing system in Mesoamerica.[15]

Knowledge of the Maya writing system continued into the early colonial era and reportedly a few of the early Spain priests who went to Yucatán learned it. However, as part of his campaign to eradicate pagan rites, Bishop Diego de Landa ordered the collection and destruction of written Maya works, and a sizable number of Maya codices were destroyed. Later, seeking to use their native language to convert the Maya to Christianity, he derived what he believed to be a Maya "alphabet" (the so-called de Landa alphabet). Although the Maya did not actually write alphabetically, nevertheless he recorded a glossary of Maya sounds and related symbols, which was long dismissed as nonsense (for instance, by leading Mayanist J. E. S. Thompson in his 1950 book Maya Hieroglyphic Writing[16]) but eventually became a key resource in deciphering the Maya script, though it has itself not been completely deciphered. The difficulty was that there was no simple correspondence between the two systems, and the names of the letters of the Spanish alphabet meant nothing to Landa's Maya scribe, so Landa ended up asking things like write hache: hache–a–ce–hache–e "hache", and glossed a part of the result as "H".

Landa was also involved in creating an orthography, or a system of writing, for the Yukatek Maya language using the Latin alphabet. This was the first Latin orthography for any of the Mayan languages, which number around thirty.

Only four Maya codices are known to have survived the conquistadors.[17] Most surviving texts are found on pottery recovered from Maya tombs, or from monuments and stelae erected in sites which were abandoned or buried before the arrival of the Spanish.

Knowledge of the writing system was lost, probably by the end of the 16th century. Renewed interest in it was sparked by published accounts of ruined Maya sites in the 19th century.[17]

6. Decipherment

Maya glyphs in stucco at the Museo de sitio in Palenque, Mexico;
Maya glyphs at National Museum of Anthropology (Mexico);

Deciphering Maya writing proved a long and laborious process. 19th-century and early 20th-century investigators managed to decode the Maya numbers[18] and portions of the texts related to astronomy and the Maya calendar, but understanding of most of the rest long eluded scholars. In the 1930s, Benjamin Whorf wrote a number of published and unpublished essays, proposing to identify phonetic elements within the writing system. Although some specifics of his decipherment claims were later shown to be incorrect, the central argument of his work, that Maya hieroglyphs were phonetic (or more specifically, syllabic), was later supported by the work of Yuri Knorozov (1922–1999), who played a major role in deciphering Maya writing.[19] Napoleon Cordy also made some notable contributions in the 1930s and 1940s to the early study and decipherment of Maya script, including "Examples of Phonetic Construction in Maya Hieroglyphs", in 1946.[20] In 1952 Knorozov published the paper "Ancient Writing of Central America", arguing that the so-called "de Landa alphabet" contained in Bishop Diego de Landa's manuscript Relación de las Cosas de Yucatán was made of syllabic, rather than alphabetic symbols. He further improved his decipherment technique in his 1963 monograph "The Writing of the Maya Indians"[21] and published translations of Maya manuscripts in his 1975 work "Maya Hieroglyphic Manuscripts". In the 1960s, progress revealed the dynastic records of Maya rulers. Since the early 1980s scholars have demonstrated that most of the previously unknown symbols form a syllabary, and progress in reading the Maya writing has advanced rapidly since.

As Knorozov's early essays contained several older readings already published in the late 19th century by Cyrus Thomas,[22] and the Soviet editors added propagandistic claims[23] to the effect that Knorozov was using a peculiarly "Marxist-Leninist" approach to decipherment,[23] many Western Mayanists simply dismissed Knorozov's work. However, in the 1960s more came to see the syllabic approach as potentially fruitful, and possible phonetic readings for symbols whose general meaning was understood from context began to develop. Prominent older epigrapher J. Eric S. Thompson was one of the last major opponents of Knorozov and the syllabic approach. Thompson's disagreements are sometimes said to have held back advances in decipherment.[24] For example, (Coe 1992) says "the major reason was that almost the entire Mayanist field was in willing thrall to one very dominant scholar, Eric Thompson". G. Ershova, a student of Knorozov's, stated that reception of Knorozov's work was delayed only by authority of Thompson, and thus has nothing to do with Marxism – "But he (Knorozov) did not even suspect what a storm of hatred his success had caused in the head of the American school of Mayan studies, Eric Thompson. And the Cold War was absolutely nothing to do with it. An Englishman by birth, Eric Thompson, after learning about the results of the work of a young Soviet scientist, immediately realized 'who got the victory'."[25]

Detail of the Dresden Codex (modern reproduction);

In 1959, examining what she called "a peculiar pattern of dates" on stone monument inscriptions at the Classic Maya site of Piedras Negras, Russian-American scholar Tatiana Proskouriakoff determined that these represented events in the lifespan of an individual, rather than relating to religion, astronomy, or prophecy, as held by the "old school" exemplified by Thompson. This proved to be true of many Maya inscriptions, and revealed the Maya epigraphic record to be one relating actual histories of ruling individuals: dynastic histories similar in nature to those recorded in other human cultures throughout the world. Suddenly, the Maya entered written history.[26]

Although it was then clear what was on many Maya inscriptions, they still could not literally be read. However, further progress was made during the 1960s and 1970s, using a multitude of approaches including pattern analysis, de Landa's "alphabet", Knorozov's breakthroughs, and others. In the story of Maya decipherment, the work of archaeologists, art historians, epigraphers, linguists, and anthropologists cannot be separated. All contributed to a process that was truly and essentially multidisciplinary. Key figures included David Kelley, Ian Graham, Gilette Griffin, and Michael Coe.

Dramatic breakthroughs occurred in the 1970s, in particular at the first Mesa Redonda de Palenque, a scholarly conference organized by Merle Greene Robertson at the Classic Maya site of Palenque and held in December, 1973. A working group led by Linda Schele, an art historian and epigrapher at the University of Texas at Austin, included Floyd Lounsbury, a linguist from Yale, and Peter Mathews, then an undergraduate student of David Kelley's at the University of Calgary (whom Kelley sent because he could not attend). In one afternoon they managed to decipher the first dynastic list of Maya kings, the ancient kings of the city of Palenque. By identifying a sign as an important royal title (now read as the recurring name Kʼinich), the group was able to identify and "read" the life histories (from birth, to accession to the throne, to death) of six kings of Palenque.

From that point, progress proceeded rapidly, not only in the decipherment of the Maya glyphs, but also towards the construction of a new, historically-based understanding of Maya civilization. Scholars such as J. Kathryn Josserand, Nick Hopkins and others published findings that helped to construct a Mayan vocabulary.[27] In 1988 Wolfgang Gockel published a translation of the Palenque inscriptions based on a morphemic rather than syllabic interpretation of the glyphs. The "old school" continued to resist the results of the new scholarship for some time. A decisive event which helped to turn the tide in favor of the new approach occurred in 1986, at an exhibition entitled "The Blood of Kings: A New Interpretation of Maya Art", organized by InterCultura and the Kimbell Art Museum and curated by Schele and by Yale art historian Mary Miller. This exhibition and its attendant catalogue—and international publicity—revealed to a wide audience the new world which had latterly been opened up by progress in decipherment of Maya hieroglyphics. Not only could a real history of ancient America now be read and understood, but the light it shed on the material remains of the Maya showed them to be real, recognisable individuals. They stood revealed as a people with a history like that of all other human societies: full of wars, dynastic struggles, shifting political alliances, complex religious and artistic systems, expressions of personal property and ownership and the like. Moreover, the new interpretation, as the exhibition demonstrated, made sense out of many works of art whose meaning had been unclear and showed how the material culture of the Maya represented a fully integrated cultural system and world-view. Gone was the old Thompson view of the Maya as peaceable astronomers without conflict or other attributes characteristic of most human societies.

However, three years later, in 1989, supporters who continued to resist the modern decipherment interpretation launched a final counter-assault. This occurred at a conference at Dumbarton Oaks. It did not directly attack the methodology or results of decipherment, but instead contended that the ancient Maya texts had indeed been read but were "epiphenomenal". This argument was extended from a populist perspective to say that the deciphered texts tell only about the concerns and beliefs of the society's elite, and not about the ordinary Maya. In opposition to this idea, Michael Coe described "epiphenomenal" as "a ten penny word meaning that Maya writing is only of marginal application since it is secondary to those more primary institutions—economics and society—so well studied by the dirt archaeologists."[28]

Linda Schele noted following the conference that this is like saying that the inscriptions of ancient Egypt—or the writings of Greek philosophers or historians—do not reveal anything important about their cultures. Most written documents in most cultures tell us about the elite, because in most cultures in the past, they were the ones who could write (or could have things written down by scribes or inscribed on monuments).

Over 90 percent of the Maya texts can now be read with reasonable accuracy.[29] (As of 2020), at least one phonetic glyph was known for each of the syllables marked green in this chart. /tʼ/ is rare. Based on verbal inflection patterns, it would seem that a syllabogram for /wu/ did not exist rather than simply being unattested.[30] /pʼ/ is not found, and is thought to have been a later innovation in the Cholan and Yucatec languages.

Syllables for which at least one phonetic glyph has been found[31][32]
  (ʼ) b ch chʼ h j k l m n p s t tz tzʼ w x y
a Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes   Yes Yes Yes Yes Yes
e Yes Yes Yes ? Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes   Yes ?   ? Yes
i Yes Yes Yes   Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes   Yes Yes Yes Yes Yes
o Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes ? Yes Yes   Yes Yes Yes Yes
u Yes Yes Yes   Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes

7. Syllables

Syllables are in the form of consonant + vowel. The top line contains individual vowels. In the left column are the consonants with their pronunciation instructions. The apostrophe ' represents the glottal stop. There are different variations of the same character in the table cell. Blank cells are bytes whose characters are not yet known.[33]

8. Example

Tomb of Kʼinich Janaabʼ Pakal:

9. Computer Encoding

With digital technologies, Maya writing may face a resurrection,[34] but currently Maya script cannot be represented in any computer character encoding. A range of code points (U+15500–U+159FF) has been tentatively allocated for Unicode, but no detailed proposal has been submitted yet.[35] The Script Encoding Initiative project of the University of California, Berkeley was awarded a grant on June 3, 2016 to start the process of a proposal for layout and presentation mechanisms in Unicode text, to the Unicode Consortium in 2017.[36] This work is not yet concluded by 2020.[37]

The goal of encoding Maya hieroglyphs in Unicode is to facilitate the modern use of the script. For representing the degree of flexibility and variation of classical Maya, the expressiveness of Unicode is insufficient (e.g., with regard to the representation of infixes), so, for philological applications, different technologies are required.[38]

The content is sourced from:


  1. Houston, Stephen D.; Robertson, John; Stuart, David (2000). "The Language of Classic Maya Inscriptions". Current Anthropology 41 (3): 321–356. doi:10.1086/300142. ISSN 0011-3204. PMID 10768879.
  2. Kettunen & Helmke 2014, p. 13.
  3. Kettunen & Helmke 2014, p. 22.
  4. Vowel length and glottalization are not always indicated in common words like 'they are'.
  5. Lacadena García-Gallo & Ciudad Ruiz 1998, pp. 31–64.
  6. Berlin, H. (1958). "El Glifo Emblema en las inscripciones Maya" (in es). Journal de la Société des Américanistes de Paris 47: 111–119. 
  7. Marcus, J. (1 June 1973). "Territorial Organization of the Lowland Classic Maya". Science 180 (4089): 911–916. doi:10.1126/science.180.4089.911. PMID 17735911. Bibcode: 1973Sci...180..911M.
  8. Mathews 1991.
  9. Houston 1986.
  10. Houston 1993, pp. 97–101.
  11. Tokovinine, A. (December 2006). "People from a place: re-interpreting Classic Maya "Emblem Glyphs"". 11th European Maya Conference "Ecology, Power, and Religion in Maya Landscapes". Malmö University, Sweden. 
  12. Gronemeyer, S. (2009). "Maya Political Relations and Strategies". in Źrałka, Jarosław; Koszkul, Wiesław; Golińska, Beata. The 14th European Maya Conference. 4. Cracow: Polska Akademia Umiejętności and Uniwersytet Jagielloński. 2012. pp. 13–40. 
  13. Information panel in the Museo Regional de Antropología in Mérida (state of Yucatán), visited on 2010-08-04
  14. Saturno, Stuart & Beltrán 2006, pp. 1281–1283.
  15. Coe 1992, preface.
  16. Robinson, Andrew (2002). Lost Languages: The Enigma of the World's Undeciphered Scripts. New York City: Nevraumont Publishing Company. pp. 122. 
  17. McKillop 2004, p. 294.
  18. Constantine Rafinesque (1832) "Philology. Second letter to Mr. Champollion on the graphic systems of America, and the glyphs of Otolum or Palenque, in Central America – Elements of the glyphs," Atlantic Journal and Friend of Knowledge, 1 (2) : 40–44. From p. 42: "This page of Demotic has letters and numbers, these represented by strokes meaning 5 and dots meaning unities as the dots never exceed 4."
  19. Yuri Knorozov at Britannica
  20. American Antiquity, Vol. 12, No. 2. 12 (2): 108–117. 1946
  21. (in Russian) Yuri Knorozov
  22. Coe 1992, p. 151.
  23. Coe 1992, p. 147.
  24. Coe 1992, p. 125–144.
  25. Ершова Г.Г. Юрий Валентинович Кнорозов // Портреты историков. Время и судьбы. М., Наука, 2004. С.474-491.
  26. Coe 1992, pp. 167–184.
  27. "Josserand, Hopkins interview transcript". 
  28. Coe 1992, p. 268.
  29. Breaking the Maya Code 2008.
  30. Kettunen & Helmke 2014, pp. 48–49.
  31. Kettunen & Helmke 2014.
  32. "Updated List of Characters for Mayan Codices". 
  33. Pitts, Mark (2008). "Writing in Maya Glyphs: Names, Places, & Simple Sentences : A Non-Technical Introduction to Maya Glyphs". FAMSI. pp. s. 16–22.. 
  34. Joseph DeChicchis (2012), Current Trends in Mayan Literacy, In: John C. Maher, Jelisava Dobovsek-Sethna, and Cary Duval (eds.), Literacy for Dialogue in Multilingual Societies. Proceedings of Linguapax Asia Symposium 2011, Tokyo 2012, p. 71-82
  35. The Unicode Consortium, Roadmap to the SMP
  36. Unicode Consortium blog retrieved:6jun16
  37. "progress overview". 
  38. Diehr, Franziska, et al. "Modelling vagueness-A criteria-based system for the qualitative assessment of reading proposals for the deciphering of Classic Mayan hieroglyphs." COMHUM. 2018.
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