1Davis , F. D(1989), Perceivde Usefulness , Perceivde Ease of Use , and User Acceptance of Information Techonlogy , MIS Quarterly , 13, 1989, PP. 319 - 340.
2VenKatesh, V. and Davis, F. D. “A model of the on tecedents of percaived ease of use: Development and test, ”Decision Sciences ( 27: 3 ) 1996, PP45 - 481.
3Venkatesh, V. and Davis, F. D. “A theorfetica extension of the Technology Acceptance Model:Four longitudinal field studids”, Management Science (46 : 2)2000, pp 186 - 204.