Safer, Adam B; Grace, Michael S (2004). «Infrared imaging in vipers: Differential responses of crotaline and viperine snakes to paired thermal targets». Behavioural Brain Research. 154 (1): 55–61. PMID15302110. doi:10.1016/j.bbr.2004.01.020
Krochmal, Aaron R.; Bakken, George S.; LaDuc, Travis J. (2004). «Heat in evolution's kitchen: evolutionary perspectives on the functions and origin of the facial pit of pitvipers (Viperidae: Crotalinae)». Journal of Experimental Biology. 207 (24): 4231–8. PMID15531644. doi:10.1242/jeb.01278
itis.gov
«Bitis» (em inglês). ITIS (www.itis.gov). Consultado em 18 de julho de 2006
nih.gov
ncbi.nlm.nih.gov
Safer, Adam B; Grace, Michael S (2004). «Infrared imaging in vipers: Differential responses of crotaline and viperine snakes to paired thermal targets». Behavioural Brain Research. 154 (1): 55–61. PMID15302110. doi:10.1016/j.bbr.2004.01.020
Krochmal, Aaron R.; Bakken, George S.; LaDuc, Travis J. (2004). «Heat in evolution's kitchen: evolutionary perspectives on the functions and origin of the facial pit of pitvipers (Viperidae: Crotalinae)». Journal of Experimental Biology. 207 (24): 4231–8. PMID15531644. doi:10.1242/jeb.01278
