?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Tarek&rft.aulast=Mostafa&rft.au=Mostafa%2C+Tarek&rft.title=International+Journal+of+Economic+Theory&rft.pages=263%E2%80%93274&rft.issn=1742-7363&rft.atitle=The+Rise+of+Endogeneity+in+Multilevel+Models%3A+a+Theoretical+Assessment+of+the+Role+of+Stratification.&rft.date=21+August+2014&rft.issue=3&rft.volume=10&rft.genre=article