Bestimmungsschlüssel der Grabwespen Nord- und Zentraleuropas (Hymenoptera, Sphecidae)
De graafwespen van de Benelux
Die Grabwespen Deutschlands. Bestimmungsschlüssel
The Sphecidae (Hymenoptera) of Fennoscandia and Denmark
Die Grabwespen Deutschlands
Hymenoptera Aculeata Westfalica Familia: Sphecidae (Grabwespen)
Nederlandse Fauna 6
Sphecid wasps of the world: a generic revision
Sphecid wasps of the world: a generic revision
The flesh-flies of Central Europe
Venoms of the hymenoptera
Wasp fauna (Hymenoptera: Bethylidae, Chrysididae, Dryinidae, Tiphiidae, Mutillidae, Scoliidae, Pompilidae, Vespidae, Sphecidae, Crabronidae & Trigonalyidae) of Mordovia State Nature Reserve and its surroundings in Russia