Ancient DNA reveals genotypic relationships among Oregon populations of the sea otter (Enhydra lutris) - Kim Valentine; Deborah A. Duffield; Lorelei E. Patrick; David R. Hatch; Virginia L. Butler; Roberta L. Hall; Niles Lehman (Conservation Genetics, 2008)

Microsatellite variation and population structure in the “Refractario” cacao of Ecuador - Dapeng Zhang; Michel Boccara; Lambert Motilal; David R. Butler; Pathmanathan Umaharan; Sue Mischke; Lyndel Meinhardt (Conservation Genetics, 2008)