Carvalho, D. M., C. M. L. Aguiar, and G. M. M. Santos. “Food Niche Overlap Among Neotropical Carpenter Bees (Hymenoptera: Apidae: Xylocopini) in an Agricultural System”. Sociobiology, vol. 60, no. 3, Nov. 2013, pp. 283-8, doi:10.13102/sociobiology.v60i3.283-288.