Sannolo, Marco, Francesca Gatti, Marco Mangiacotti, Stefano Scali, and Roberto Sacchi. 2016. “Photo-Identification in Amphibian Studies: A Test of I3S Pattern”. Acta Herpetologica 11 (1):63-68. https://doi.org/10.13128/Acta_Herpetol-17198.