?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Artamonov&rft.au=Artamonov%2C+AV&rft.aufirst=AV&rft.date=November+2005&rft.atitle=Upper+limit+on+the+branching+ratio+for+the+decay+pi+0+-%3E+vv(-)&rft.volume=72&rft.issn=1550-7998&rft.title=PHYSICAL+REVIEW+D&rft.issue=9&rft.genre=article