Reference

B. I. Barabanshchikov, M. G. Stekol'shchikov, E. A. Sapayev (1985): On settlement of trap-nests by wild bees in the Tatar ASSR; [Ru; 1 fig., 1 tab., 11 refs. Date: 20.XII.1985]. – In: LYUBARSKIY, E. L. (ed.). Interaction between Components of Ecological Systems. [A Collection of Scientific Papers]. Kazan (Kazan State University) – : 109 - 115.