?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=D.M.&rft.aulast=Vos&rft.au=Vos%2C+D.M.&rft.degree=Master&rft.title=What+Users+Want%3A+de+Gebruikersvraag+vs+het+Aanbod&rft.date=2013