S. R. Posso, R. J. Donatelli, V. Q. Piacentini, and A. Guzzi, “Phylogeny and classification of the Bucconidae (Aves, Galbuliformes) based on osteological characters”, Pap. Avulsos Zool., vol. 60, p. e20206027, Jun. 2020, doi: 10.11606/1807-0205/2020.60.27.