1. A class of discontinuous functions and global optimization problems;Zheng;Numerical Mathematics, A Journal of Chinese Universities,1985
2. Global optimization of a class discontinuous functions;Zheng;Journal of Applied Sciences,1986
3. Optimality conditions for global optimization (I) and (II);Zheng;Acta Mathematicae Applicatae Sinica,1986
4. Optimality conditions for global optimization (I) and (II);Zheng;Acta Mathematicae Applicatae Sinica,1986
5. A method for finding a global extremum;Zheng;Acta Mathematicae Applicatae Sinica,1978