5William J Eettinger.Choong C Lee.Zones of Tolerance:Alternative Scales for Measuring Information Systems Service Quality.MIS Quarterly.2005:(4).
6Arun Rai,Sandra S,Lang .RobertB Welker. Assessing the Validity of IS Success Models:An Empirical Test and Thcorctical Analvsis.Information Sysiems Research,2002:13(1).