中国科学院数学与系统科学研究院期刊网
The Number of 2-Connected Cubic Rooted Planar Maps
Jun Liang CAI,Xiao Li LIU,Yan
Acta Mathematica Sinica, Chinese Series . 2006, (3): 605 -612 .  DOI: 10.12386/A2006sxxb0075