1. DANNELL, I. and W. HINZ, 1976. Zur Biologie onPisidium amnicum O.F. MÜLLER (Bivalvia). Arch. Hydrobiol., 77: 213–225.
2. DYDUCH-FALNIOWSKA, A., 1982. Oscillations in density and diversity ofPisidium communities in two biotopes in southern Poland. Hydrobiol. Bull., 16: 123–132.
3. HEARD, W.H., 1965. Comparative life histories of North American pill clams (Sphaeriidae:Pisidium). Malacologia, 2: 381–411.
4. HOLOPAINEN, I.J., 1978. Ecology ofPisidium (Bivaivia, Sphaeriidae) populations in an oligotrophic and mesohumic lake. Publ. Univ. Joensuu, Ser. B 1: 1–12.
5. HOLOPAINEN, I.J., 1979. Population dynamics and production ofPisidium species (Bivalvia, Sphaeriidae) in the oligotrophic and mesohumic lake Pääjärvi, Southern Finland. Arch. Hydrobiol./Suppl., 54: 466–508.