1. Identification in situ and phylogeny of uncultured bacteria endosymbionts;Amann;Nature,1991
2. The Ciliated Protozoa. Characterization, Classification and Guide to the Literature;Corliss,1979
3. Particularités ultrastructurales du cilié Cyrtolophosis mucicola Stokes, 1885;Detcheva;C.R. Soc. Biol.,1976
4. “Candidatus Paraholospora nucleivisitans” an intracellular bacterium in Paramecium sexaurelia shuttles between cytoplasm and nucleus of its host;Eschbach;Syst. Appl. Microbiol.,2009
5. Ecology of Protozoa. The Biology of Free-living Phagotrophic Protists;Fenchel,1987