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Benz BW, Robbins MB, Peterson AT (august 2006). „Evolutionary history of woodpeckers and allies (Aves: Picidae): placing key taxa on the phylogenetic tree”. Molecular Phylogenetics and Evolution. 40 (2): 389–99. Bibcode:2006MolPE..40..389B. doi:10.1016/j.ympev.2006.02.021. PMID16635580.
Benz BW, Robbins MB, Peterson AT (august 2006). „Evolutionary history of woodpeckers and allies (Aves: Picidae): placing key taxa on the phylogenetic tree”. Molecular Phylogenetics and Evolution. 40 (2): 389–99. Bibcode:2006MolPE..40..389B. doi:10.1016/j.ympev.2006.02.021. PMID16635580.
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