1. P.S. Adler, T.A. Winograd, Usability: Turning Technologies into Tools, Oxford University Press, New York, NY, 1992.
2. Electronic greetings versus paper cards: managerial challenges and entrepreneurial opportunities;Benbunan-Fich;Journal of Applied Management and Entrepreneurship,1999
3. The use of protocol analysis in accounting;Bouwman;Accounting and Finance,1985
4. Exploring a word processor;Carroll;Human-Computer Interaction,1985
5. J.S. Dumas, J.C. Redish, A Practical Guide to Usability Testing, Ablex Publishing Corporation, Norwood, NJ, 1993.