Molecular Phylogeny of Owls (Strigiformes) Inferred from DNA Sequences of the Mitochondrial Cytochrome b and the Nuclear RAG-1 gene Wink, Michael ; El-Sayed, Abdel-Aziz ; Sauer-Gürth, Hedi ; Gonzalez, Javier Abstract Publication: Ardea Pub Date: December 2009 DOI: 10.5253/078.097.0425 Bibcode: 2009Ardea..97..581W