中国科学院数学与系统科学研究院期刊网
多重闭梯图在曲面上嵌入的分类
郭婷, 黄元秋, 刘新求
Classification of Embeddings of Closed-end Multi-Ladders on Surfaces
Ting GUO, Yuan Qiu HUANG, Xin Qiu LIU
数学学报 . 2013, (1): 87 -96 .  DOI: 10.12386/A2013sxxb0009