Hackett, S.J.; et al. (2008). «A Phylogenomic Study of Birds Reveals Their Evolutionary History». Science. 320: 1763–8. PMID18583609. doi:10.1126/science.1157704
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ncbi.nlm.nih.gov
Hackett, S.J.; et al. (2008). «A Phylogenomic Study of Birds Reveals Their Evolutionary History». Science. 320: 1763–8. PMID18583609. doi:10.1126/science.1157704