Reference

Wilhelm Foissner, S. Brozek (1996): Taxonomic characterization of *Pseudohaplocaulus infravacuolatus* nov.spec.and *Vorticella chlorellata* #Stiller# 1940,epiplanktonic peritrichs(Ciliophora,Peritrichia)attached to coenobia of Anabaena(Cyanophyta),including a redescription of V.chlorostißß – Intern. Revue ges. Hydrobiol. – 81: 329 - 351.