1. Postdoctoral, Dept. of Engineering and Geology, Univ. “G. d’Annunzio” of Chieti-Pescara, Viale Pindaro 42, 65127 Pescara, Italy.
2. Ph.D. Candidate, Dept. of Engineering and Geology, Univ. “G. d’Annunzio” of Chieti-Pescara, Viale Pindaro 42, 65127 Pescara, Italy.
3. Associate Professor, Dept. of Engineering and Geology, Univ. “G. d’Annunzio” of Chieti-Pescara, Viale Pindaro 42, 65127 Pescara, Italy (corresponding author).