Felicioli, A., Sagona, S., Corazza, M., Pretti, C. and Zuffi, M. A. (2013) “Water-soluble proteinase activity of gastric fluids in the European whip snake, <em>Hierophis viridiflavus</em>: an experimental preliminary survey”, Acta Herpetologica, 8(2), pp. 147–152. doi: 10.13128/Acta_Herpetol-12381.