Rizzo V., TERRANOVA O., 1998, Triggering factors and development of a complex landslide (Randazzo, northeastern Sicily, Italy), Proceedings Eight International Congress of IAEG, pp. 1661–1668, Vancouver (Canada), 21-25 Sept. 1998,
URL: http://www.cnr.it/prodotto/i/233768

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