@article{articleefceb3ea,
title   = {On the geographical differentiation of Gymnodactylus gekoides Spix, 1825 (Sauria, Gekkonidae): speciation in the Brasilian Caatingas},
author = {Vanzolini, Paulo Emilio},
year = {2004},
doi = {10.1590/s0001-37652004000400005},
journal   = {Anais da Academia Brasileira de Ciências}
}