1. Full Professor, Dept. of Hydraulic, Geotechnical and Environmental Engineering, Univ. of Naples Federico II, via Claudio 21, 80125, Napoli, Italy.
2. Researcher, Dept. of Hydraulic, Geotechnical and Environmental Engineering, Univ. of Naples Federico II, via Claudio 21, 80125, Napoli, Italy.
3. Associate Professor, Dept. of Engineering, Univ. of Sannio, piazza Roma 21, 82100, Benevento, Italy.
4. Dept. of Hydraulic, Geotechnical and Environmental Engineering, Univ. of Naples Federico II, via Claudio 21, 80125, Napoli, Italy.