Sensitivity of Electronic Commerce Measurement to the Survey Instrument. - Vasja Vehovar; Katja Lozar Manfreda; Zenel Batagelj (Int. J. Electron. Commer., 2001)

Design of Web Survey Questionnaires: Three Basic Experiments. - Katja Lozar Manfreda; Zenel Batagelj; Vasja Vehovar (J. Comput. Mediat. Commun., 2002)