Romano, Antonio, Riccardo Novaga, and Andrea Costa. 2016. “<em>Olim palus</em>, Where Once Upon a Time the Marsh: Distribution, Demography, Ecology and Threats of Amphibians in the Circeo National Park (Central Italy)”. Acta Herpetologica 11 (2):197-212. https://doi.org/10.13128/Acta_Herpetol-18061.