中国科学院数学与系统科学研究院期刊网
On the Fixed Point Existence and Uniqueness Theorems of Mixed Monotone Operators and Their Applications
Yan Sheng WU,Guo Zhen LI
Acta Mathematica Sinica, Chinese Series . 2003, (1): 161 -166 .  DOI: 10.12386/A2003sxxb0022