中国科学院数学与系统科学研究院期刊网
VARIATIONAL INEQUALITIES FOR MULTIVALUED MAPPINGS WITH APPLICATIONS TO NONLINEAR PROGRAMMING AND SADDLE POINT PROBLEMS
Zhang Shi-sheng(Shih-sen Chang), Shu Yong-lu
Acta Mathematicae Applicatae Sinica . 1991, (1): 32 -39 .  DOI: 10.12387/C1991005