1. Refutations by matings;Andrews;IEEE Trans. Comput.,1976
2. Theorem proving via general matings;Andrews;Journal of the Association for Computing Machinery,1981
3. An introduction to type theory: to truth through proof;Andrews,1986
4. Gentzen-type systems, resolution and tableaux;Avron;Journal of Automated Reasoning,1993
5. Note on the existence of most general semi-unifiers;Baaz,1993