Peter J.P.J.WaddellPeter J.P.J. i inni, Assessing the Cretaceous Superordinal Divergence Times within Birds and Placental Mammals by Using Whole Mitochondrial Protein Sequences and an Extended Statistical Framework, „Systematic Biology”, 48 (1), 1999, s. 119–137, DOI: 10.1080/106351599260481, ISSN1076-836X.
Peter J.P.J.WaddellPeter J.P.J. i inni, Assessing the Cretaceous Superordinal Divergence Times within Birds and Placental Mammals by Using Whole Mitochondrial Protein Sequences and an Extended Statistical Framework, „Systematic Biology”, 48 (1), 1999, s. 119–137, DOI: 10.1080/106351599260481, ISSN1076-836X.