«Volcanic history of Ventotene island», basert på Perrotta, Annamaria; Scarpati, Claudio; Giacomelli, Lisetta; Capozzi, Anna Rita (1996): «Proximal facies of a caldera forming eruption. The Parata Grande Tuff at Ventotene Island (Italy)» i: Journal of Volcanology and Geothermal Research