1. J.R. Hobbs, Granularity, in Proc. IJCAI-85, 432–435.
2. Topology;Eisenberg,1974
3. Zhang Bo and Zhang Ling, Artificial intelligence and mathematics, (Chinese) to appear.
4. Statistical heuristic search;Bo;J. Computer Sci. Technol.,1974
5. The successive SA search and its computational complexity;Zhang,1984