Leeben, A., Alliksaar, T., Bonningues, N., Freiberg, R., Heinsalu, A., Lepane, V., Makarõtševa, N., Tõnno, I
allikas
European Large Lakes Symposium : Ecosystem Changes and their Ecological and Socioeconomic Impacts : September 11-15, 2006, Tartu, Estonia : programme and abstracts