中国科学院数学与系统科学研究院期刊网
AMS
A Revised Pre-Order Principle and Set-Valued Ekeland Variational Principles with Generalized Distances
Jing Hui QIU
Acta Mathematica Sinica . 2017, (6): 775 -792 .  DOI: 10.1007/s10114-017-5062-5