1. Robinson J A. A machine-oriented logic based on the resolution principle [J]. Journal of the Association for Computing Machinery, 1965, 12(1): 23–41.
2. Luckham D. Refinement theorems in resolution theory [C]//Proceedings of IRIA Symposium Automatic Demonstration. Versailes, France: Spring-Verlag, 1968: 16–21.
3. Chang C L, Lee R C-T. Symbolic logic and mechanical theorem proving [M]. New York: Academic Press, 1973.
4. Liu Xu-hua. Resolution-based automated reasoning [M]. Beijing: Science Press, 1994 (in Chinese).
5. Wos L. Automated reasoning: 33 basic research problems [M]. New Jersey, USA: Prentice Hall, 1988.