共 14 条
- [1] BIRGE FA, 1929, T WIS ACAD SCI ARTS, V24, P509
- [4] LUND JWG, 1950, J ECOL, V38, P1, DOI 10.2307/2256522
- [5] NYGAARD G, 1955, VERH INT VER LIMNOL, V12, P123
- [7] Rodhe W, 1958, VERH INT VEREIN ANGE, V13, P121
- [8] Round F. F., 1956, Archiv fuer Hydrobiologie, V52, P398