@book{bhlpg32124663, title = {Keys to the insects of the European USSR. (Opredelitel nasekomykh Evropeiskoi chasti SSSR) }, volume = {v.3:pt.4 (1995)}, url = {https://www.biodiversitylibrary.org/page/32124663}, publisher = {Israel Program for Scientific Translations; [available from U.S. Dept. of Commerce, Clearinghouse for Federal Scientific and Technical Information, Springfield, Va.]}, author = {Bykhovskiĭ, B. E. (Boris Evseevich), 1908 -1974}, year = {1995}, pages = {Page 305}, } @book{bhlpg39677412, title = {List of Hymenoptera, with descriptions and figures of the typical specimens in the British museum. Vol. I. Tenthrediniadæ and Siricidæ }, volume = {v.1 (1882)}, url = {https://www.biodiversitylibrary.org/page/39677412}, publisher = {Printed by Order of the Trustees}, author = {British Museum (Natural History). Department of Zoology. }, year = {1882}, pages = {Page 36}, }