?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Collaboration&rft.aufirst=ATLAS&rft.au=Collaboration%2C+ATLAS&rft.date=December+2014&rft.atitle=A+measurement+of+the+ratio+of+the+production+cross+sections+for+W+and+Z+bosons+in+association+with+jets+with+the+ATLAS+detector&rft.volume=74&rft.title=The+European+Physical+Journal+C&rft.genre=article