?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Jura&rft.au=Jura%2C+M&rft.aufirst=M&rft.date=10+July+2007&rft.atitle=Externally+polluted+white+dwarfs+with+dust+disks&rft.issue=2&rft.title=Astrophysical+Journal&rft.issn=1538-4357&rft.pages=1285-1290&rft.volume=663&rft.genre=article