Cavarzere V, Silveira LF, Vasconcelos MF de, Grantsau R, Straube FC. Taxonomy and biogeography of Stephanoxis Simon, 1897 (Aves: Trochilidae) . Pap. Avulsos Zool. 2014;54(7):69-79. doi:10.1590/0031-1049.2014.54.07