^Ganner, B.; Foissner, W. (1989). "Taxonomy and ecology of some ciliates (Protozo, Ciliophora) of the saprobic system. III. Revision of the genera Colpidium and Dexiostoma, and establishment of a new genus, Paracolpidium nov. gen". Hydrobiologia. 182 (3): 181–218. doi:10.1007/BF00007515. S2CID26687052.
Further reading
Foissner, W.; Berger, H. (1996). "A user‐friendly guide to the ciliates (Protozoa, Ciliophora) commonly used by hydrobiologists as bioindicators in rivers, lakes, and waste waters, with notes on their ecology". Freshwater Biology. 35 (2): 375–482. doi:10.1111/j.1365-2427.1996.tb01775.x.