W. Wüster m.fl. (2008). «A nesting of vipers: Phylogeny and historical biogeography of the Viperidae (Squamata: Serpentes)». Molecular Phylogenetics and Evolution. 49 (2): 445–459. ISSN1055-7903. doi:10.1016/j.ympev.2008.08.019.
W. Wüster m.fl. (2008). «A nesting of vipers: Phylogeny and historical biogeography of the Viperidae (Squamata: Serpentes)». Molecular Phylogenetics and Evolution. 49 (2): 445–459. ISSN1055-7903. doi:10.1016/j.ympev.2008.08.019.