1. Department of Hydraulic and Environmental Engineering, The University of Trondheim, N-7034 Trondheim - NTH, Norway
2. Aquateam-Norwegian Water Technology Centre A/S, P. O. Box 6326 Etterstad, N-0604 Oslo, Norway
3. Kaldnes Miljøteknologi A/S, P.O. Box 420, N-3101 Tønsberg, Norway