Lucas, Jeffrey R. (August 1983). "The Role of Foraging Time Constraints and Variable Prey Encounter in Optimal Diet Choice". The American Naturalist. 122 (2): 191–209. doi:10.1086/284130. S2CID85216873.
Schmid-Hempel, Paul (February 1987). "Efficient Nectar-Collecting by Honeybees I. Economic Models". The Journal of Animal Ecology. 56 (1): 209–218. Bibcode:1987JAnEc..56..209S. doi:10.2307/4810. JSTOR4810.
Schmid-Hempel, Paul (February 1987). "Efficient Nectar-Collecting by Honeybees I. Economic Models". The Journal of Animal Ecology. 56 (1): 209–218. Bibcode:1987JAnEc..56..209S. doi:10.2307/4810. JSTOR4810.
Schmid-Hempel, Paul (February 1987). "Efficient Nectar-Collecting by Honeybees I. Economic Models". The Journal of Animal Ecology. 56 (1): 209–218. Bibcode:1987JAnEc..56..209S. doi:10.2307/4810. JSTOR4810.
Lucas, Jeffrey R. (August 1983). "The Role of Foraging Time Constraints and Variable Prey Encounter in Optimal Diet Choice". The American Naturalist. 122 (2): 191–209. doi:10.1086/284130. S2CID85216873.