Reference

J.C. Grignard, C. Melard, E. Baras, A. Poirier, J.C. Philippart, J.C. Bussers (1996): Occurrence and impact of Heteropolaria sp. (Protozoa, Ciliophora) on intensively cultured perch (Perca fluviatilis) – Ann. Zool. Fennici – 33: 653 - 657.