D. Fallman. CHI '03: Proceedings of the SIGCHI conference on Human factors in computing systems, Ft. Lauderdale, Florida, USA, page 225-232. New York, ACM, (2003)
N. Deshpande, B. de Vries, and J. van Leeuwen. Progress in Design & Decision Support Systems in Architecture and Urban Planning, 8th International DDSS Conference, 4-7 July, Eindhoven, page 303-312. (2006)
J. Löwgren. (2008)This is an electronic document. Date of publication: June 10, 2008. Date retrieved: October 3, 2009. Date last modified: September 4, 2009.