1. Benyon, D.: The role of task analysis in systems design. Interacting with computers 4(1), 102–123 (1992)
2. Beyer, H., Holtzblatt, K.: Contextual Design: Defining Customer-Centered Systems. Morgan Kaufman, San Francisco (1998)
3. Boivie, I., Åborg, C., Persson, J., Löfberg, M.: Why Usability Gets Lost or Usability in In-house Software Development. Interacting with Computers (2003) (in press)
4. Carroll, J.M., Rosson, M.B.: Usability Specifications as a Tool in Iterative Development. In: Hartson, H.R. (ed.) Advances in Human-Computer Interaction. Norwood, New Jersey (1985)
5. Constantine, L., Lockwood, L.: Structure and Style in Use Cases for User Interface Design. In: van Harmelen, M. (ed.) Designing Interactive Systems: Object modelling and user interface design (2001)