?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Helmhout%2C+Dr.+Ing.+Martin+%2F+J.M.&rft.aulast=Helmhout&rft.aufirst=Martin+%2F+J.M.&rft.date=November+2006&rft.title=The+Social+Cognitive+Actor&rft.inst=University+of+Groningen