?url_ver=Z39.88-2004&rft_id=10.1103%2FPhysRevE.81.036114&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Petersen&rft.aufirst=Alexander+M.&rft.au=Petersen%2C+Alexander+M.&rft.issue=3&rft.pages=036114&rft.volume=81&rft.date=March+2010&rft.atitle=Methods+for+measuring+the+citations+and+productivity+of+scientists+across+time+and+discipline&rft.title=Physical+Review+E&rft.issn=1539-3755&rft.genre=article