Reference

K.J. Clarke, B.J. Finlay, Genoveva F. Esteban, B.E. Guhl, T.M. Embley (1993): *Cyclidium porcatum* n.sp.: a free-living anaerobic scuticociliate containig a stable complex of hydrogenosomes, eubacteria and archaeobacteria – Europ. J. Protistol. – 29: 262 - 270.