中国科学院数学与系统科学研究院期刊网
AMS
The Connectivity and Minimum Degree of Circuit Graphs of Matroids
Ping LI, Gui Zhen LIU
Acta Mathematica Sinica . 2010, (2): 353 -360 .  DOI: 10.1007/s10114-010-6685-y