1. Die Abdomenbasis der Neuropteroidea (Insecta, Holometaboia). Eine vergleichend anatomische Untersuchung des Skeletts und der Muskulatur;Achtelig;Zoomorphologie,1975
2. A re-examination of the relationships of the Raphidioptera (Insecta);Achtelig;Z. zool. Syst. Evol. forsch.,1973
3. Hybrizontinae or Hybrizontidae? (Hymenoptera, Ichneumonoidea);van Achterberg;Entomol. Berichten,1976a
4. A preliminary key to the subfamilies of the Braconidae (Hymenoptera);van Achterberg;Tijdschr. Entomol.,1976b
5. The genera of the Mymaridae. Hymenoptera: Chalcidoidea;Annecke;Rep. S. Africa Dep. Agr. Techn. Serv. Ent. Mem.,1961