Farabollini, Piero, Marco Materazzi, and Gianni Scalella. “PROPOSAL FOR PRESERVATION AND PROTECTION OF THE MARCHE REGION MUD VOLCANOES (CENTRAL ITALY) ”. Alpine and Mediterranean Quaternary 18, no. 1 (May 17, 2005): 179–184. Accessed May 14, 2025. https://amq.aiqua.it/index.php/amq/article/view/485.