?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Zhang&rft.aufirst=Rui&rft.date=5+September+2014&rft.title=Essays+on+Matching%2C+Outsourcing+and+Social+Networks