?url_ver=Z39.88-2004&rft_id=doi%3A10.1038%2Fsrep39467&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Gualdi&rft.aufirst=Stanislao&rft.au=Gualdi%2C+Stanislao&rft.issn=2045-2322&rft.date=2016&rft.title=Scientific+Reports&rft.atitle=Statistically+validated+network+of+portfolio+overlaps+and+systemic+risk&rft.issue=1&rft.pages=39467&rft.volume=6&rft.genre=article