G. C. Leynaud, M. R. Cabrera, and P. Carrasco, “A survey of the southernmost representatives of the tricolor species group, genus Phalotris (Serpentes, Colubridae)”, Phyllomedusa, vol. 4, no. 2, pp. 103–110, Dec. 2005, doi: 10.11606/issn.2316-9079.v4i2p103-110.