Reference

Zdenek Padr (1990): Studie vyskytu zahadlovych blanokridlych (Hymenoptera-Aculeata) na uzemi Prahy. (A study of Distribution of Hymenoptera-Aculeata on the Territory of Praha). – Natura pragensis - studie o prirode Prahy, Cesky ustav ochrany prirody – 7: 1 - 179.