Serralde Narváez, Nadia Mariana and Miguel Ángel Ruz Barrio. “The Techialoyan Codices and their Number”. Revista Española de Antropología Americana, vol. 45, vol. 45, no. 1, 2016, pp. 229-52, doi: https://doi.org/10.5209/rev_REAA.2015.v45.n1.52363.