中国科学院数学与系统科学研究院期刊网
AMS
Nowhere-zero 15-Flow in 3-Edge-connected Bidirected Graphs
Er Ling WEI, Wen Liang TANG, Dong YE
Acta Mathematica Sinica . 2014, (4): 649 -660 .  DOI: 10.1007/s10114-014-2028-8