Booyse D., Dehority B. A. (2011) Rumen protozoa in South African sheep with a summary of the worldwide distribution of sheep protozoa. Onderstepoort J. Vet. Res. 78(1): 1–7

Bush A. O., Laffert K. D., Lotz J. M., Shostak A. W. (1997) Parasitology meets ecology on its own terms: Margolis et al. revisited. J. Parasitol. 83: 575–583

Bush M., Kofoid C. A. (1948) Ciliates from Sierra Nevada bighorn Ovis Canadensis sierrae Grinnel. Univ. Calif. Public. Zool. 53: 237–262

Cedrola F., Rossi M., Dias R. J. P., Martinele I., D’Agosto M. (2015) Methods for taxonomic studies of rumen ciliates (Alveolata, Ciliophora): A brief review. Zool. Sci. 32(1): 8–15

Cedrola F., Martinele I., Dias R. J. P., Fregulia P., D’Agosto M. (2016) Rumen ciliates in Brazilian sheep (Ovis aries), with new records and redescription of Entodinium contractum (Entodiniomorphida: Ophryoscolecidae). Zootaxa. 4088(2): 292–300

D’Agosto M., Carneiro M. E. (1999) Evaluation of lugol solution used for counting rumen ciliates. Rev. Bras. Zool. 85: 725–729

Dehority B. A. (1974) Rumen ciliate fauna of Alaskan Moose (Alces americana), Musk-Ox (Ovibus moschatus) and Dall Montain Sheep (Ovis dalli). J. Protozool. 21(1): 26–32

Dehority B. A. (1984) Evaluation of subsampling and fixation procedures for counting rumen protozoa. Appl. Environ. Microbiol. 48: 182–185

Dogiel V. A. (1927) Monographie der familie Ophryoscolecidae. Arch. Protistenk. 59: 1–288

Fernandez-Galiano D. (1958) La infraciliación en Polyplastron multivesiculatum y su genesis durante la dividión del ciliado. Bol. R. Soc. Esp. Hist. Nat. 32: 89–102

Ferndandez-Galiano D. (1979) Transfer of the widely known “spirotrich” ciliate Bursaria truncatella O.F.M. to the Vestibulifera as a separate order there, the Bursariomorphida. Trans. Am. Microsc. Soc. 98: 447–454

Ito A., Imai S. (2006) Infraciliary band pattern of rumen ophryoscolecid ciliates. Endocytobiosis and Cell Research. 17: 103–110

Kofoid C. A., MacLennan R. F. (1932) Ciliates from Bos indicus II. The genus Diplodinium Schuberg. Univ. Calif. Public. Zool. 41: 53–152

Lubinsky G. (1958) Ophryoscolecidae (Ciliata: Entodiniomorphida) of reindeer (Rangifer tarandus L.) from the Canadian Arctic II. Diplodiniinae. Can. J. Zool. 36: 937–959

Medeiros G. R., Carvalho F. F. R., Batista A. M. V., Dutra Júnior W.M., Santos G.R.A., Andrade K.B. (2009) Efeito dos níveis crescentes de concentrado sobre as características de carcaça de ovinos Morada Nova em confinamento. Rev. Bras. Zootec. 38: 718–727

Mishima T., Katamoto H., Hori Y., Kakengi V. A. M., Ito A. (2009) Rumen ciliates from Tanzanian short horn zebu cattle Bos taurus indicus and the infraciliatures of Entodininium palmare n. sp. and Enoploplastron stokyi (Buisson, 1924). Eur. J. Protistol. 45: 77–86

Rossi M., Cedrola F., Dias R. J. P., Martinele I., D’Agosto, M. (2016) Improved silver carbonate impregnation method for rumen ciliate protozoa. Rev. Bras. Zooc. 17: 33–40

Williams A. G., Coleman G. S. (1992) The Rumen Protozoa. Springer, New York, 423 pp