?url_ver=Z39.88-2004&rft_id=10.1103%2FPhysRevE.71.066116&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Bianconi%2C+Ginestra&rft.aulast=Bianconi&rft.aufirst=Ginestra&rft.pages=066116&rft.issn=1539-3755&rft.atitle=Loops+structure+of+the+Internet+at+the+autonomous+system+level&rft.title=Physical+Review+E&rft.issue=6&rft.volume=71&rft.date=June+2005&rft.genre=article