1. Associate Professor, Dept. of Environmental Engineering and Sustainable Development, Technical Univ. of Bari, viale del Turismo 10, 74100 Taranto, Italy.
2. Postdoctoral Scholar, Dept. of Civil and Environmental Engineering, Univ. of California, Davis, One Shields Ave., Davis, CA 95616 (corresponding author).
3. Assistant Professor, Dept. of Environmental Engineering and Sustainable Development, Technical Univ. of Bari, viale del Turismo 10, 74100 Taranto, Italy.
4. Full Professor, Dept. of Structural Engineering and Geotechnics, Sapienza Univ. of Rome, via A. Gramsci 53, 00197 Roma, Italy.