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♦ 1Geographic variation in the diet composition of a secretive Mediterranean colubrid snake: Coronella girondica from Spain and Italy, Luca Luiselli, Juan M. Pleguezuelos, Massimo Capula, Carmen Villafranca, Ital. J. Zool., 68: 57-60 (2001)
♦ 2The 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