1. Department of Civil, Architectural and Environmental Engineering, University of Naples Federico II, Naples, Italy
2. Department of Mathematics and Applications Renato Caccioppoli, University of Naples Federico II, Naples, Italy
3. UNESCO-IHE Institute for Water Education, Delft, The Netherlands
4. National Research Council of Italy, Institute of Biomolecular Chemistry, Pozzuoli, Italy
5. Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, Italy