1. On the prolonged surviving of Paramecium caudatum without division;Alpatov;Zool. J. (Moscow),1947
2. Paramecium sonneborni n. sp., a new member of the Paramecium aurelia species-complex;Aufderheide;J. Protozool,1983
3. Drei paramecien des chrysalis-types (Paramecium varionuklei=P. pseudoputrinum 1931, P. traunsteineri und P. chilodonides);Baumeister;Mit. Zool. Geselsch. Braun.,1969
4. Some conditions for the distribution and abundance of ciliates (Protozoa) in running waters—do we really find every species everywhere?;Blatterer;Verh. Int. Verein. Limnol.,2002
5. Sur une paramécie a deux races;Chatton;C. R. Soc. Biol.,1933