Reference

Günther Steinbrück, Martin Schlegel (1983): Characterization of two sibling species of the genus *Stylonychia* (Ciliata, Hypotricha): *S. mytilus* #Ehrenberg#, 1838 and *S. lemnae* n. sp. II. Biochemical characterization – J. Protozool. – 30: 294 - 300.