Marques, O.A.V. and Sazima, I. 2003. Ontogenetic color changes may strengthen suggestion about systematic affinities between two species of Chironius (Serpentes, Colubridae). Phyllomedusa: Journal of Herpetology. 2, 1 (Jun. 2003), 65–67. DOI:https://doi.org/10.11606/issn.2316-9079.v2i1p65-67.