?url_ver=Z39.88-2004&rft_id=10.1103%2FPhysRevE.69.035101&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Caldarelli%2C+Guido&rft.aulast=Caldarelli&rft.aufirst=Guido&rft.issn=1539-3755&rft.atitle=Widespread+occurrence+of+the+inverse+square+distribution+in+social+sciences+and+taxonomy&rft.title=Physical+Review+E&rft.date=March+2004&rft.volume=69&rft.issue=3&rft.genre=article