?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.physa.2014.09.037&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Paolo&rft.au=Sgrignoli%2C+Paolo&rft.aulast=Sgrignoli&rft.issn=0378-4371&rft.pages=245-260&rft.issue=1&rft.date=January+2015&rft.atitle=The+relation+between+global+migration+and+trade+networks&rft.title=Physica+A%3A+Statistical+Mechanics+and+its+Applications&rft.volume=417&rft.genre=article