1. Benyon, D., 2004, “Representations in Human-Computer Systems Development”, in press, http://www.dcs.napier.ac.uk/~dbenyon/publ.html
2. Benyon, D. and M. Imaz, 1999, Metaphors and Models: Conceptual Foundations of Representations for Interactive System Design, Human-Computer Interaction 14: 159–189.
3. Cabarga, L., 2001, The designer’s Guide to Global Color Combinations: 750 Color Formulas in CMYK and RGB from Around the World, How Design Books, Cincinnati.
4. Hasdogan, G., 1996, “The role of user models in product design for assessment of user needs”, Design Studies 17(1), p. 19–33.
5. Hsiao, S.-W. and H.-Y. Ou, 2000, “A Study on the Application of the Spatial Color Image to Design”, Master Thesis, Department of Industrial Design, National Cheng Kung University, Taiwan. (in Chinese)