1. About the identity of Biosteres (Biosteres) impressus (Wesmael) (Braconidae, Opiinae);Achterberg;Entomologische Berichten,1975
2. A revision of the subfamily Zelinaeauct. (Hymenoptera, Braconidae);Achterberg;Tijdschrift voor Entomologie,1979
3. Addition to the revision of the genus Zele Curtis (Hymenoptera: Braconidae);Achterberg;Entomologische Berichten,1984
4. Essay on the phylogeny of Braconidae (Hymenoptera: Ichneumonoidea);Achterberg;Entomologisk Tidskrift,1984
5. The genera and subgenera of Centistini, with description of two new taxa from the Nearctic Region (Hymenoptera: Braconidae: Euphorinae);Achterberg;Zoologische Mededelingen,1985