1. The phylogeny and classification of the phylum Cephalorhyncha;Adrianov;Zoosyst Ross,1995
2. On the protonephridial system of the brackish-water rotifer Proales reinhardti (Rotifera, Monogononta);Ahlrichs;Microfauna Mar,1993a
3. Ultrastructure of the protonephridia of Seison annulatus (Rotifera);Ahlrichs;Zoomorphology,1993b
4. Zur Ultrastruktur der Protonephridien von Tubiluchus philippinensis (Tubiluchidae, Priapulida);Alberti;Zool Anz,1986
5. Zur Feinstruktur des weiblichen Geschlechtstraktes von Tubiluchus philippinensis (Tubiluchidae, Priapulida);Alberti;Zool Anz,1989