Del Prete S. (1), Iovine G. (2), Parise M. (3) & Santo A. (1), 2009, Typology and distribution of sinkholes in the plain areas of southern Italy, Geophysical research abstracts (Online) 11 (2009).,
URL: http://www.cnr.it/prodotto/i/172964

Data from https://intranet.cnr.it/people/