1. NADEL, Swiss Federal Institute of Technology (ETH) Zürich, CH-8092 Zürich, Switzerland
2. Eawag, Swiss Federal Institute of Aquatic Science and Technology, CH-8600 Dübendorf, Switzerland
3. IBP, Swiss Federal Institute of Technology (ETH) Zürich, CH-8092 Zürich, Switzerland
4. ENAC, Swiss Federal Institute of Technology Lausanne (EPFL), CH-1015 Lausanne, Switzerland