1. Centre of Hydrogeology and Geothermics; Neuchâtel Switzerland
2. Département de géologie et de génie géologique; Université Laval; Quebec Quebec Canada
3. National Centre for Groundwater Research and Training and School of the Environment; Flinders University; Adelaide South Australia Australia
4. Agrosphere (IBG-3); Forschungszentrum Juelich GmbH; Jülich Germany