BioStor
 | XXIV.—Contributions to the natural history of the Infusoria T W Engelmann (1862) Annals And Magazine of Natural History 10: 241-261 |
 | XXXII.—The pelagic fauna of freshwater lakes F A Forel (1882) Annals And Magazine of Natural History 10: 320-325 |
 | Studien zur Kenntnis der pelagischen Fauna der Schweizerseen Othmar Emil Imhof (1883) Zoologischer Anzeiger 6: 466-471 |
 | Notes on Colorado Protozoa with Descriptions of New Species Arthur E Beardsley (1902) Transactions of The American Microscopical Society 23: 49-59 |
 | Contribuição para o conhecimento da fauna de protozoarios do Brazil Aristides Marques Da Cunha (1913) Memórias Do Instituto Oswaldo Cruz 5: 101-122 |
 | Pennatularia W Kukenthal (1915) Das Tierreich 43: 1-132 |
 | Protozoa of the Devil's Lake Complex, North Dakota Charles Howard Edmondson (1920) Transactions of The American Microscopical Society 39: 167-198 |
 | Die sessilen peritrichen Infusorien und Suctorien von Basel und Umgebung Alfred Keiser (1921) Revue Suisse De Zoologie 28: 221-341 |
 | THE FOOD-VACUOLE IN THE PERITRICHA, WITH SPECIAL REFERENCE TO THE HYDROGEN-ION CONCENTRATION OF ITS CONTENT AND OF THE CYTOPLASM S O Mast and W J Bowen (1944) Biol Bull 87: 188-222 |
 | A revision of the genus Vorticella (Ciliophora: Peritrichida) A Warren (1986) Bulletin of the British Museum (Natural History) Zoology 50(1): 1-57 |
 | Zooplancton De Ambientes Loticos De La Subcuenca Delta Del Rio Parana, Buenos Aires, Argentina Beatriz E Modenutti (1991) Iheringia Serie Zoologia 71: 67-80 |