Rebouças, P. O., C. Aguiar, V. Ferreira, G. Sodré, C. Carvalho, and M. Gimenes. “The Cavity-Nesting Bee Guild (Apoidea) in a Neotropical Sandy Coastal Plain”. Sociobiology, vol. 65, no. 4, Oct. 2018, pp. 706-13, doi:10.13102/sociobiology.v65i4.3339.