1. Ejsmont-Karabin, J., 1998. Is sandy beach in lakes an ecotone? (Psammon Rotifera in Lake Kuc) In Radwan, S. (ed.), Freshwater Ecotones. Structure, Types and Function. UMCS Publish., Lublin: 43–49 (English summary).
2. Evans, W., 1984. Seasonal abundances of the psammic rotifers of a physically controlled stream. Hydrobiologia 108: 105–114.
3. Kraska, M., H. Szyper & H. Romanowicz, 1994. Water trophy of 37 Lobelian lakes of the Tuchola Forest and of the Bytów Lake District. In Kraska, M. (eds), Lobelian Lake. Characteristic, Functioning and Protection. Idee Ekologiczne 6: 135–147 (English summary).
4. Krebs, J. C., 1989. Ecological Methodology. New York: 654 pp.
5. Pennak, R., 1951. Comparative ecology of the interstitial fauna of fresh-water and marine beaches. Année Biol. 27: 449–480