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 !
Zanden, Brad Vander and Halterman, Richard L. (2001): Using model dataflow graphs to reduce the storage requirements of constraints. In ACM Transactions on Computer-Human Interaction, 8 (3) pp. 223-265. Available online
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