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 !
Coulston, Chris and Vitolo, Theresa M. (2001): A hypertext metric based on huffman coding. In: Hypertext'01 - Proceedings of the Twelfth ACM Conference on Hypertext and Hypermedia August 14-18, 2001, Aarhus, Denmark. pp. 243-244.
Smith, Donald A., Greeno, James G. and Vitolo, Theresa M. (1989): A Model of Competence for Counting. In Cognitive Science, 13 (2) pp. 183-211.