Puorto, G., Salomao, M., Theakston, R., Thorpe, R., Warrell, D., & Wuster, W. (2001). Combining mitochondrial DNA sequences and morphological data to infer species boundaries: Phylogeography of lanceheaded pitvipers in the Brazilian Atlantic forest, and the status of Bothrops pradoi (Squamata : Serpentes : Viperidae).

Puorto, G., MD Salomao, R. Theakston, R. Thorpe, D. Warrell, and W. Wuster. Combining Mitochondrial DNA Sequences and Morphological Data to Infer Species Boundaries: Phylogeography of Lanceheaded Pitvipers in the Brazilian Atlantic Forest, and the Status of Bothrops Pradoi (Squamata : Serpentes : Viperidae). 2001.

Puorto, G., et al. Combining Mitochondrial DNA Sequences and Morphological Data to Infer Species Boundaries: Phylogeography of Lanceheaded Pitvipers in the Brazilian Atlantic Forest, and the Status of Bothrops Pradoi (Squamata : Serpentes : Viperidae). 2001.