J. H.  Cane and Payne, J. A., ?Regional, annual and seasonal variation in pollinator guilds: intrinsic traits of bees (Hymenoptera: Apoidea) underlie their patterns of abundance at Vaccinium ashei (Ericaceae)?, Annals of the Entomological Society of America, vol. 86, pp. 577 - 588, 1993.

B. J.  Sampson and Cane, J. H., ?Pollination efficiencies of three bee (Hymenoptera : Apoidea) species visiting rabbiteye blueberry?, Journal of Economic Entomology, vol. 93, pp. 1726 - 1731, 2000.