Vanzolini, P. E. 1970. “Climbing Habits of Leptotyphlopidae (Serpentes) and walls’s Theory of the Evolution of the Ophidian Eye”. Papéis Avulsos De Zoologia 23 (1-23 (1970-1971): 13-16. https://doi.org/10.11606/0031-1049.1970.23.p13-16.