References
- BAILEY, L. (1952) The action of the proventriculus of the worker honeybee, Apis mellifera L. J. exp. Biol. 29(2): 310–327
- BEUTLER, R. (1936) Über den Blutzucker der Bienen. Z. vergi. Physiol. 24: 71–115
- BEUTLER, R.(1953) Nectar. Bee Wld 34: 105–116, 128–136, 156–162
- FARRAR, C. L. (1936) Influence of pollen reserves on the surviving population of overwintered colonies. Am. Bee J. 76: 452–454
- FARRAR, C. L. (1968) Productive management of honey bee colonies. Am. Bee J. 108: 95–97, 141–143, 183–185, 228–230, 271–275, 316–317, 354–356, 392–393
- FREE, J. B. (1967) Seasonal regulations in the honeybee colony. Ch. 13 from “Regulation and Control in living systems” ed. H. Kalmus. New York: John Wiley
- FREE, J. B. (1968) Studies on the seasonal changes in the activities of honeybees. Lect. Cent. Ass. Beekprs
- FRISCH VON, K. (1969) The foraging bee: how she finds and exploits sources of food. Bee Wld 50(4): 141–151
- HAYDAK, M. H. (1970) Honey bee nutrition. A. Rev. Ent. 15: 143–156
- KIECHLE, H. (1961) Die soziale Regulation der Wassersammeltätigkeit im Bienenstaat und deren physiologische Grundlage. Z. vergi. Physiol. 45: 154–192
- LINDAUER, M. (1955) The water economy and temperature regulation of the honeybee colony. Bee Wld 35: 62–72, 81–92, 105–111
- MOFFET, J. O. & PARKER, R. L. (1953) Relation of weather factors to nectar flow in honey production. Tech. Bull. Kansas agric. Exp. Stn No. 74
- NOLAN, W. J. (1932) The development of package-bee colonies. Bull. U.S. Dep. Agric. No. 309
- PARK, O. W. (1925) The storing and ripening of honey by honeybees. J. econ. Ent. 18: 405–410
- PARK, O. W. (1932) Studies on the changes in nectar concentration produced by the honey bee. I. Changes which occur between the flower and the hive. Res. Bull. la agric. Exp. Sta. No. 151: 209–244
- SOEHNGEN, U. & JAY, S. C. (1972) Factors affecting pollen removal from the honey sac of worker honeybees. J. apic. Res. 11(1): 3–8
- SOEHNGEN, U. & JAY, S. C. (1973) Studies on the honey-sac contents and pollen loads of honeybees. 1. Honey-sac contents of bees in the hive. J. apic. Res. 12(2): 65–73