Mangiacotti, M., L. Limongi, M. Sannolo, R. Sacchi, M. Zuffi, and S. Scali. “Head Shape Variation in Eastern and Western Montpellier Snakes”. Acta Herpetologica, vol. 9, no. 2, Dec. 2014, pp. 167-7, doi:10.13128/Acta_Herpetol-14194.