Balaton Limnological Research Institute Hungarian Academy of Sciences, Hungary
Center for Limnology University of Wisconsin-Madison, USA
Institute for Limnology Austrian Academy of Sciences, Mondsee, Austria
Institute of Limnology, Russian Academy of Sciences St.-Petersburg, Russia
Kinneret Limnological Laboratory Migdal, Israel
Institute of Zoology and Limnology University of Innsbruck, Austria
Limnological Station Technical University of Munich, Germany
Max Planck Institute for Limnology Ploen, Germany