中国科学院数学与系统科学研究院期刊网
AMS
New Generalized R-KKM Type Theorems in General Topological Spaces and Applications
Xie Ping DING
Acta Mathematica Sinica . 2007, (10): 1869 -1880 .  DOI: 10.1007/s10114-005-0876-y