1. Berner-Fankhauser, H., 1983. Abundance, dynamics and succession of planktonic rotifers in Lake Biel, Switzerland Hydrobiologia 104: 349–352.
2. Berner-Fankhauser, H., 1986. Populationsdynamik der Plankton-Rotatorien in Bielersee, 1981/82. Thesis, Bern. 88 pp. (German, with English summary).
3. Bērzinš, B., 1958. Ein planktologisches Querprofil. Rep. Inst. Freshw. Res. Drottningholm 39: 5–22(German only).
4. Bērzinš, B., 1978. Ekologisk valens. Koder. Zookomponenter, substrat och lokaler. Internal report, Limnol. inst., Lund. ISSN 0348–0798. 86 pp. (Swedish only).
5. Bērzinš, B. & B. Pejler, 1987. Rotifer occurrence in relation to pH. Hydrobiologia 147: 107–116.