Marc Hassenzahl explains the fascinating concept of User Experience and Experience Design. Commentaries by Don Norman, Eric Reiss, Mark Blythe, and Whitney Hess
User Experience and Experience Design !
Jepsen, Kathrin, Glass, Gregor and Englert, Roman (2009): When 'one fits all' does not fit: study of visualization types for mobile help systems. In: Proceedings of the HCI09 Conference on People and Computers XXIII 2009. pp. 398-404.