1. Winograd, T.: Understanding natural language, (Edinburgh Press 1972)
2. Uhr, L.: Pattern recognition, learning and thought, (Prentice-Hall, New Jersey 1973)
3. Glover, R.J.: ‘Minerva: an adaptive computing system’, , Ph.D. thesis, University of Kent (to be submitted)
4. Aleksander, I.: Buck-passing redundancy in pattern recognition, (to be published)