1. Berger, C., 1987. Habitat en ecologie von Oscillatoria agardhii Gomont. Van Zee tot Land 55. Rijksdienst voor de IJsselmeerpolders, Lelystad (with an extensive English summary.): 1–233.
2. Berger, C. & H. E. Sweers, 1988. The IJsselmeer and its phytoplankton — with special attention to the suitability of the lake as a habitat for Oscillatoria agardhii Gom. J. Plankton Res. 10: 579–599.
3. Chorus, I., 1989. Phytoplankton und Primärproduktion im Schlachtensee 1982/83 zu Beginn der Sanierung. WaBoLu Hefte 3: 1–17.
4. Chorus, I. & E. Wesseler, 1988. Response of the phytoplankton community to therapy measures in a highly eutrophic urban lake (Schlachtensee, Berlin). Verh. int. Ver. Limnol. 23: 719–728.
5. Chorus, I. & C. Speck, 1990. Bedeutung der Sedimentationsverluste für das Phytoplankton des Schlachtensees. Extended abstracts of the annual congress of the German Society for Limnology: 101–106.