?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Ramo&rft.aufirst=DM&rft.au=Ramo%2C+DM&rft.title=PHYS+REV+LETT&rft.volume=99&rft.atitle=Theoretical+prediction+of+intrinsic+self-trapping+of+electrons+and+holes+in+monoclinic+HfO2&rft.issue=15&rft.issn=0031-9007&rft.date=12+October+2007&rft.genre=article