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♦ 1The prey spectrum of Natrix natrix (LINNAEUS, 1758) and Natrix tessellata (LAURENTI, 1768) in sympatric populations (Squamata: Serpentes: Colubridae), ERNESTO FILIPPI & MASSIMO CAPULA & LUCA LUISELLI & UMBERTO AGRIMI, HERPETOZOA 8 (3/4): 155 -164 Wien, 30. Jänner 1996
♦ 2Prey availability drives geographic dietary differences of a Mediterranean predator, the Latastes viper (Vipera latastei), Xavier Santos, Juan M. Pleguezuelos, José C. Brito, Gustavo A. Llorente, Xavier Parellada & Soumia Fahd, HERPETOLOGICAL JOURNAL 18: 1622, 2008