Complete mitochondrial genome phylogeographic analysis of killer whales (Orcinus orca) indicates multiple species - Morin, Phillip A.; Archer, Frederick I.; Foote, Andrew D.; Vilstrup, Julia; Allen, Eric E.; Wade, Paul; Durban, John; Parsons, Kim; Pitman, Robert; Li, Lewyn; Bouffard, Pascal; Abel Nielsen, Sandra C.; et al. (Genome Research, 2010)
10.1101/gr.102954.109