1. AOU. 1998. Check-list of North American birds, 7thd. - American Ornithologists’ Union, Washington, D.C.
2. Convergence in the Coerebidae;Beecher,1951
3. Nuclear DNA evolution and phylogeny of the new world nine-primaried oscines;Bledsoe,1988
4. Intense natural selection in a population of Darwin's finches (Geospizinae) in the Galapagos;Boag,1981
5. Is Diglossa (?Thraupinae) Monophyletic?;Bock,1985