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McEvoy, Brian; Beleza, Sandra; Shriver, Mark D. (2006-10-15). "The genetic architecture of normal variation in human pigmentation: an evolutionary perspective and model". Human Molecular Genetics. 15 (suppl 2): R176–R181. doi:10.1093/hmg/ddl217. ISSN0964-6906. PMID16987881.
McEvoy, Brian; Beleza, Sandra; Shriver, Mark D. (2006-10-15). "The genetic architecture of normal variation in human pigmentation: an evolutionary perspective and model". Human Molecular Genetics. 15 (suppl 2): R176–R181. doi:10.1093/hmg/ddl217. ISSN0964-6906. PMID16987881.