Domenico Aringoli (a), Mattia Ippolito (b), Nicola Sciarra (c), Bernardino Gentili (d), Marco Materazzi (a) & Gilberto Pambianchi (a)
(a) School of Sciences and Technology, University of Camerino, Viale Gentile III da Varano, 62032 Camerino, Italy.
(b) Freelance Geologist, Via del Convento 17, 65010 Spoltore (PE), Italy. E-mail: mattiaippolito@libero.it
(c) Department of Engineering and Geology, University of Chieti-Pescara "G. D'Annunzio, Via dei Vestini, 31, 66100 Chieti, Italy
(d) School of Sciences and Technology, University of Camerino, Viale Annunziata, 63100 Ascoli Piceno, Italy