1. Human contributions to the design process;Eason,1991
2. J.D. Gould and C. Lewis, Designing for usability - key principles and what designers think, IBM Research Report RC 10317, 1984.
3. S. Hannigan and V. Herring, The role of human factors in the design of IT products, HUFIT Deliverable A1.2b, HUFIT/3-HUS-11/86, 1986.
4. Describing a product opportunity: a methodology for understanding the user's environment;Hutt,1987
5. An integrated human factors input to the design of information technology products;Galer,1990