1. The forging of Central America;Coates,1997
2. The great American faunal interchange;Webb,1997
3. Biodiversity conservation through facilitation of its sustainable use: Costa Rica's National Biodiversity Institute;Gámez;Trends Ecol Evol,1991
4. The Costa Rican herpetofauna: conservation status and future perspectives;Sasa,2010
5. Serpientes Venenosas de Costa Rica;Picado,1931