1. Hellenic Union of Municipal Enter. for Water Supply and Sewerage, 41200 Larissa and National Agric. Res. Foundation, Regional Foundation for Agricultural Research of Crete, Water Resources and Environment Division, P.O. Box 2229, 71307 Iraklio, Greece
2. EC-DG RTD, Key Action "Environment and Health", Rue de la Loi, 200, B-1049 Brussels, Belgium
3. ONDEO Service-CIRSEE, 38 rue du President-Wilson, 78230 Le Pecq, France