References
- De Bernardi, R., Giussani, G. & Lasso Perdetti, E., 1981: The significance of blue-green algae as food for filter-feeding zooplankton fed by Microcystis aeruginosa. — Verh. Internat. Verein. Limnol. 21: 477–483.
- Dorgelo, J., Van Donk, E. & De Graaf Bierbrauwer, J. M., 1981: The late winter-spring bloom and succession of diatoms during four years in Lake Maarsseven (The Netherlands). — Verh. Internat. Verein. Limnol. 21: 938–947.
- Okamoto, K. & Narita, T., 1981: Seasonal change in size-selective feeding activities of Daphnia longispina and Eodiaptomus japonicus on a natural phytoplankton community in Lake Biwa. — Verh. Internat. Verein. Limnol. 21: 600.