1. Professor, Dept. of Civil Engineering and Architecture, Technical Univ. of Bari, Via E. Orabona, 4, 70125 Bari, Italy (corresponding author).
2. Assistant Professor, Dept. of Civil Engineering and Architecture, Technical Univ. of Bari, Via E. Orabona, 4, 70125 Bari, Italy.
3. Research Fellow, Dept. of Civil Engineering and Architecture, Technical Univ. of Bari, Via E. Orabona, 4, 70125 Bari, Italy.
4. Professor, Centre for Water Systems, College of Engineering, Mathematics and Physical Sciences, Univ. of Exeter, Harrison Building, North Park Rd., Exeter EX4 4QF, U.K.