?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=LR&rft.au=Dartnell%2C+LR&rft.aulast=Dartnell&rft.volume=11&rft.date=July+2011&rft.issue=6&rft.atitle=Ionizing+Radiation+and+Life&rft.issn=1531-1074&rft.title=Astrobiology&rft.pages=551+-+582&rft.genre=article