Persona

Monografia (1988) CAL '87 : selected proocedings from the Computer Assisted Learning '87 Symposium : 31 March–3 April 1987, University of Stathclyde
Monografia (1992) Cognitive tools for learning : [proceedings of the NATO Advanced Study Institute of Mindtools: Cognitive Technologies for Modeling Knowledge, held in Enschede, the Netherlands, July 4–10, 1990]