Gusev, V. I., and M. N. Rimskij-Korsakov. 1940. Opredelitel' povrezdenij lesnich i dekorativnich derevsv i kustarnikov evropejskok casti SSSR [Keys to the classification of destructive pests in forest and park trees and shrubs in the European parts of the USSR]. Edition 2, expanded and revised [In Russian]. Government Press, Leningrad. 587 p., illustr.