1. Norman, D.A.: The Psychology of Everyday Things. Basic Book Inc., New York (1988)
2. Gibson, J.J.: The theory of affordances. In: Shaw, R., Bransford, J. (eds.) Perceiving, Acting, and Knowing, Erlbaum, Hillsdale NY (1977)
3. Gibson, J.J.: The Ecological Approach to Visual Perception. Houghton Mifflin, Boston (1979)
4. McGrenere, J., Ho, W.: Affordances: Clarifying and evolving a concept. In: Proc. of Graphic Interface, Montreal, Canada, pp. 179–186 (2000)
5. Oliver, M.: The problem with affordance. E-Learning 2(4), 402–413 (2005)