Reference

N. R. Bogatyrev (1994): Optimal and actual foraging in bumble bees; p. 323. [En. Date: 21.VIII.1994]. – In: LENOIR, A., et al. (editorial board). Les Insectes Sociaux. The 12th Congress of the International Union for Study of Social Insects, (Paris, Sorbonne, 21-27 August, 1994). [Abstracts]. Paris (Université Paris Nord) – .