Mode comparison study on willingness to buy and willingness to pay for organic foods: paper-and-pencil versus computerized questionnaire.
Kiriaki M. KeramitsoglouKatja Lozar ManfredaCharalampia AnastasiouKnut Kalgraff SkjåkKonstantinos P. TsagarakisPublished in: Electron. Commer. Res. (2018)