References

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2. H. Wikberg, 'How Small Can We Go? A Mobile Phone User Interface Based on Single Key,' in OzCHI 2000 Conference Proceedings, Sydney, Dec. 2000.

3. J. Nielsen, Usability Engineering. San Diego: Academic Press, 1993.

4. R. Picard, Affective Computing. Cambridge, Mass.: MIT Press, 1997.

5. P. Desmet, P. Hekkert, and J. Jacobs, 'When a Car Makes You Smile: Development and Application of an Instrument to Measure Product Emotions,' Adv. Consumer Research 27: 111-117 (2000).

6. B. Gaver, T. Dunne, and E. Pacenti, 'Design: Cultural Probes,' ACM Interactions 6(1): 21-29 (1999).