1. Central Computer and Telecommunications Agency (1990)PRINCE overview: The PRINCE project management method. London: Her Majesty’s Stationery Office.
2. Davis, G. B. (1987). Strategies for information requirements determination. In R. Galliers (ed.)Information Analysis: Selected Readings. Sydney: Addison-Wesley.
3. Gatian, A. W. (1994) Is user satisfaction a valid measure of systems effectiveness.Information and Management 26, 119–31.
4. Henson, K. L. and Hughes, C. T. (1991) A two-dimensional approach to systems development.Systems Development 8, 35–43.
5. Hirschheim, R. and Smithson, S. (1987) Information systems evaluation: myth and reality. In R. Galliers (ed.)Information Analysis: Selected Readings, pp. 367–80 Sydney: Addison Wesley.