中国科学院数学与系统科学研究院期刊网
A New Fixed Point Theorem for Upper Semi-Continuous Multivalued Mappings in H-Spaces with Applications
Xian WU,Fu Kun ZHAO
Acta Mathematica Sinica, Chinese Series . 2004, (4): 741 -746 .  DOI: 10.12386/A2004sxxb0094