1. Laboratory of Hydrology and Water Management; Ghent University; Ghent Belgium
2. Department of Applied Mathematics, Biometrics and Process Control; Ghent University; Ghent Belgium
3. Istituto di Studi sui Sistemi Intelligenti per l'Automazione; Consiglio Nazionale delle Ricerche; Bari Italy
4. Department of Environmental Sciences; Université Catholique de Louvain; Louvain-la-Neuve Belgium