Kobsa, Alfred. 1989.
“A Taxonomy of Beliefs and Goals for User Models in Dialog Systems.” in
User Models in Dialog Systems, edited by Alfred
Kobsa and Wolfgang
Wahlster, pp. 52–73. Berlin: Springer.
Kobsa, Alfred and
Wahlster, Wolfgang. 1989b.
“User Models in Dialog Systems.” in
User Models in Dialog Systems, edited by Alfred
Kobsa and Wolfgang
Wahlster, pp. 4–34. Berlin: Springer.
Kobsa, Alfred and
Wahlster, Wolfgang, eds. 1989c.
Rule-Based Expert Systems: The MYCIN Experiments of the Stanford Heuristic Programming Project. Reading, Massachusetts: Addison-Wesley.