Proceedings of the Fourth European Congress of Entomology and the 13. Internationale Symposium fur die Entomofaunistik Mitteleuropas : 1-6 September, 1991, Godollo, Hungary. Vol. 2. 1.Edit. Budapest : Hungarian Natural History Museum, 1992. S. 421-884: obr., tab. ISBN 963-7093-15-X. ISSN 1215-5365.