[Key to the identification of insects of European USSR. Volume 3. Hymenoptera. Part 6.] Opredeliteli po Faune SSSR, 158 1988: 1-267. 184 [Zoological Record Volume 126]
[Keys to the insects of the European part of the USSR. Hymenoptera.] Opredeliteli po Faune SSSR, 158 1988: 1-269. 184 [Zoological Record Volume 128]