S. A. Byun; B. F. Koop; T. E. Reimchen (October 1997). "North American Black Bear mtDNA Phylogeography: Implications for Morphology and the Haida Gwaii Glacial Refugium Controversy". Evolution. 51 (5). Society for the Study of Evolution: 1647–1653. doi:10.2307/2411216. JSTOR2411216. PMID28568643.
S. A. Byun; B. F. Koop; T. E. Reimchen (October 1997). "North American Black Bear mtDNA Phylogeography: Implications for Morphology and the Haida Gwaii Glacial Refugium Controversy". Evolution. 51 (5). Society for the Study of Evolution: 1647–1653. doi:10.2307/2411216. JSTOR2411216. PMID28568643.
S. A. Byun; B. F. Koop; T. E. Reimchen (October 1997). "North American Black Bear mtDNA Phylogeography: Implications for Morphology and the Haida Gwaii Glacial Refugium Controversy". Evolution. 51 (5). Society for the Study of Evolution: 1647–1653. doi:10.2307/2411216. JSTOR2411216. PMID28568643.