V. L. Friesen, J. F. Piatt, A. J. Baker: Evidence from cytochrome b sequences and allozymes for a „new“ species of alcid: the Long-billed Murrelet (Brichyramphus Perdix). In: Condor. Bd. 98, 1996, ISSN0010-5422, S. 681–690, online (PDF; 839 kB).
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V. L. Friesen, J. F. Piatt, A. J. Baker: Evidence from cytochrome b sequences and allozymes for a „new“ species of alcid: the Long-billed Murrelet (Brichyramphus Perdix). In: Condor. Bd. 98, 1996, ISSN0010-5422, S. 681–690, online (PDF; 839 kB).