Ficetola, G. F.; Fanelli, M.; Garizio, L.; Falaschi, M.; Tenan, S.; Ghielmi, S.; Laddaga, L.; Menegon, M.; Delfino, M. Estimating Abundance and Habitat Suitability in a Micro-Endemic Snake: The Walser Viper. Acta Herpetol. 2020, 15, 73-85.