1. Dept. of Hydraulic, Geotechnical and Environmental Engineering, Univ. of Naples, “Federico II,” Via Claudio 21, 80125 Napoli, Italy.
2. Assistant Professor of Hydraulics, Dept. of Hydraulic, Geotechnical and Environmental Engineering, Univ. of Naples, “Federico II,” Via Claudio 21, 80125 Napoli, Italy (corresponding author).
3. Assistant Professor of Hydraulic Engineering, Dept. of Civil Engineering, Univ. of Salerno, Via Ponte di Melillo, Fisciano (SA), Italy.