Marques, O. A. V.; Sazima, I. Ontogenetic Color Changes May Strengthen Suggestion about Systematic Affinities Between Two Species of Chironius (Serpentes, Colubridae). Phyllomedusa 2003, 2 (1), 65-67. https://doi.org/10.11606/issn.2316-9079.v2i1p65-67.