T. A. Viana and A. P. Lourenço, “Surveys of the bee (Hymenoptera: Apiformes) community in a Neotropical savanna using pan traps”, Pap. Avulsos Zool., vol. 60, p. e20206031, Jul. 2020, doi: 10.11606/1807-0205/2020.60.31.