1. Morphological and cytological observations on two opalinid endocommensals of Acanthixalus spinosus (Amphibia, Anura);Affa’a;Can. J. Zool.,1996
2. The fine structure of the flagellate Mixotricha paradoxa and its associated micro-organisms;Cleveland;Proc. Roy. Soc. Ser. B.,1964
3. The Opalines;Delvinquier,1993
4. España H. P. and Díaz S. F. M. (1999): Feasible mechanisms for algal digestion in the king angelfish (Pices: Pomacanthidae). J. Fish Biol, (in press).
5. Morphologie, infraciliatur und silberliniensystem von Protoopalina symphysodonis nov. spec. (Protozoa: Opalinata), einer Opalinidae aus dem intestinum von Symphysodon aequifasciata Pellegrin (Percoidei: Cichlidae);Foissner;Zool. Anz.,1979