Reference

T. Uminski (1979): Life History in Eucobresia nivalis (Dumont et Mortillet) with Notes on two Other Vitrinidae (Mollusca, Gastropoda) – Bulletin de l Academie Polonaise des Sciences. (Cl.II Agrobiol.Biol.Sci.med. 1953-56). Serie des Sciences Biologiques. – 27, No.: 205 - 210.