1 - Automation in language translation and theorem proving : some applications of mathematical logic, Brussels, June 1968 |
2 - Computer models of thought and language |
3 - Introduction to the mathematics of language study |
4 - Logic, foundations of mathematics and computability theory : Part one of the proceedings of the fifth international congress of logic, methodology and philosophy of science, London, Ontario, Canada, 1975 |
5 - Mathematical structures of language |
6 - Provability, complexity, grammars |