中国科学院数学与系统科学研究院期刊网
Classification of Embeddings of Closed-end Multi-Ladders on Surfaces
Ting GUO, Yuan Qiu HUANG, Xin Qiu LIU
Acta Mathematica Sinica, Chinese Series . 2013, (1): 87 -96 .  DOI: 10.12386/A2013sxxb0009