Ericson, P. G. P., L. Christidis, A. Cooper, M. Irestedt, J. Jackson, U. S. Johansson, & J. A. Norman. 2002. A Gondwanan origin of passerine birds supported by DNA sequences of the endemic New Zealand wrens. Proceedings of the Royal Society of London Series B 269:235–241. PDF
pnas.org
F. Keith Barker, Alice Cibois, Peter Schikler, Julie Feinstein< & Joel Cracraft: Phylogeny and diversification of the largest avian radiation. PNAS, July 27, 2004, Vol. 101, no. 30, PDFАрхивирано на сајту Wayback Machine (11. април 2016)
F. Keith Barker, Alice Cibois, Peter Schikler, Julie Feinstein< & Joel Cracraft: Phylogeny and diversification of the largest avian radiation. PNAS, July 27, 2004, Vol. 101, no. 30, PDFАрхивирано на сајту Wayback Machine (11. април 2016)