?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=H.&rft.au=Elshof%2C+H.&rft.aulast=Elshof&rft.degree=Master&rft.title=The+Return+Migration+Intention+of+Polish+Workers+in+The+Netherlands%3A+the+Role+of+Social+Networks&rft.date=2009