1. Product symbolism of Gandhi and its connection with Indian mythology;Balaram;Design Issues,1989
2. Where the action is; The foundations of embodied interaction;Dourish,2001
3. Being-in-the-world; A commentary on Heidegger's being and time, division 1;Dreyfus,1992
4. Protocol analysis: Verbal reports as data;Ericsson,1993
5. The ecological approach to visual perception;Gibson,1979