Fausto Pazzaglia (a), Laura Melelli (b), Massimiliano Barchi (b), Edoardo Piselli (c) & Daniela Provani (d)
(a) Int.Geo.Mod. s.r.l., Via Innamorati 7/a, 06123, Perugia, Italy. E-mail: f.pazzaglia@intgeomod.com
(b) Department of Physic and Geology, University of Perugia, via A. Pascoli, s.n.c., 06123, Perugia, Italy.
(c) Bastia Umbra (Perugia), Italy.
(d) Perugia, Italy.