1. Ainsworth, S., Wood, D. and Bibby, P. (1996). Coordinating Multiple Representations in Computer Based Learning Environments. In Brna, P., Paiva, A. and Self, J.A. (eds.) Proceedings of the European Conference on Artificial Intelligence in Education, 336–342. Lisbon: Edicöes Colibri.
2. Baker M. and Lund, K. (1996). Flexibly Structuring the Interaction in a CSCL Environment. In Brim, P., Paiva, A. and Self, J.A. (eds.), Proceedings of the European Conference on Artificial Intelligence in Education, 401–407. Lisbon: Edicöes Colibri.
3. Barwise, J. (1993). Heterogeneous Reasoning. In Allwein, G. and Barwise, J. (eds.) Working Papers on Diagrams and Logic, 211–234. Indiana: Visual Inference Laboratory, Indiana University.
4. Barwise, J. and Etchemendy, J. (1994). Hyperproof. Cambridge: CSLI Publications, Cambridge University Press.
5. Brayshaw, M. (1993). MRE: A Flexible and Customisable Program Visualisation Architecture. In Diaper, D. et al. (ed.) People and Computers VIII. Cambridge: Cambridge University Press.