Alexandre Aleixo. Molecular systematics and the role of the "Várzea"-"Terra-firme" ecotone in the diversification of Xiphorhynchus woodcreepers (Aves: Dendrocolaptidae). „The Auk”. 119 (3), ss. 621–640, 2002. doi:10.1642/0004-8038(2002)119%5B0621%3AMSATRO%5D2.0.CO%3B2.