1. An approach to automatic theory formation;Amarel,1963
2. , (1959). Learning machines. In The Mechanisation of Thought Processes. N.P.L. Symposium No. 10. London: H.M.S.O.
3. Design for a Brain;Ashby,1965
4. Computor programmes for the production of new concepts from old ones;Banerjee,1963
5. Activity in a block of cells capable of regenerating impulses;Beurle,1954