1. On some parasitic ciliates from Indian frogs, toads, earthworms and cockroaches;Bhatia;Arch. Protistenk.,1927
2. The ciliated protozoa;Corliss,1979
3. La position systematique de genre Balantidium;Fauré-Fremiet;J. Protozool.,1955
4. Eine verbesserte Technik der Protargolimprägnation für Ciliaten;Wilbert;Mikrokosmos,1975