?url_ver=Z39.88-2004&rft_id=10.1093%2Fcomnet%2Fcnu012&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Squartini%2C+Tiziano&rft.aulast=Squartini&rft.aufirst=Tiziano&rft.title=Journal+of+Complex+Networks&rft.atitle=Stationarity%2C+non-stationarity+and+early+warning+signals+in+economic+networks&rft.date=2014&rft.issn=2051-1310&rft.genre=article