?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=ER&rft.au=Stofan%2C+ER&rft.aulast=Stofan&rft.date=15+November+2001&rft.atitle=Preliminary+analysis+of+an+expanded+corona+database+for+Venus&rft.volume=28&rft.issue=22&rft.title=Geophysical+Research+Letters&rft.issn=0094-8276&rft.pages=4267+-+4270&rft.genre=article