?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Vignoles&rft.au=Vignoles%2C+Anna&rft.aufirst=Anna&rft.date=January+2009&rft.issue=1&rft.issn=1935-1682&rft.atitle=The+Socioeconomic+Gap+in+University+Dropouts&rft.title=B.E.+Journal+of+Economic+Analysis+%26+Policy&rft.volume=9&rft.pages=19-39&rft.genre=article