?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=M.J.M.&rft.aulast=Heeneman&rft.au=Heeneman%2C+M.J.M.&rft.degree=Master&rft.title=Consumentenvoorkeur+Koopvarianten&rft.date=2009