Reference

A. Z. Afinogenova, S. N. Zolotarev (1988): Pollination of plants by bumble bees in western Siberia; [Ru. Date: 11.VII.19881] – In: ZAKHAROV, A. A. (ed.). Biological Basis of Utilisation of Beneficial Insects. [A Collection of Scientific Papers]. Moscow (A N. SEVERTSOV Institute of the Evolutionary Morphology and Ecology of Animals, Academy of Sciences of the USSR) – : 216 - 218.