Mattea, Riccardo G., and Steven J. R. Allain. “An Observation of Nocturnal Activity in a Central-Italian Asp (Vipera Aspis Francisciredi)”. Reptiles & Amphibians 27, no. 1 (April 1, 2020): 87–88. Accessed June 15, 2025. https://journals.ku.edu/reptilesandamphibians/article/view/14469.