Curcio, F. F., de Q. Piacentini, V. and Fernandes, D. S. (2009) “On the status of the snake genera Erythrolamprus Boie, Liophis Wagler and Lygophis Fitzinger (Serpentes, Xenodontinae)”, Zootaxa. Auckland, New Zealand, 2173(1), pp. 66–68. doi: 10.11646/zootaxa.2173.1.7.