?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Squartini%2C+Tiziano&rft.aulast=Squartini&rft.aufirst=Tiziano&rft.issn=0031-9007&rft.atitle=Breaking+of+ensemble+equivalence+in+networks&rft.title=Physical+Review+Letters&rft.date=2015&rft.genre=article