中国科学院数学与系统科学研究院期刊网
AMS
The Hyperspace of the Regions below Continuous Maps with the Fell Topology
Zhong Qiang YANG, Bao Can ZHANG
Acta Mathematica Sinica . 2012, (1): 57 -66 .  DOI: 10.1007/s10114-012-0030-6