Genomic Evidence for Island Population Conversion Resolves Conflicting Theories of Polar Bear Evolution Cahill, James A. ; Green, Richard E. ; Fulton, Tara L. ; Stiller, Mathias ; Jay, Flora ; Ovsyanikov, Nikita ; Salamzade, Rauf ; St. John, John ; Stirling, Ian ; Slatkin, Montgomery ; Shapiro, Beth Abstract Publication: PLoS Genetics Pub Date: March 2013 DOI: 10.1371/journal.pgen.1003345 Bibcode: 2013PLOSG...9.3345C