中国科学院数学与系统科学研究院期刊网
An Improved Upper Bound on the Linear 2-arboricity of 1-planar Graphs
Juan LIU, Yi Qiao WANG, Ping WANG, Lu ZHANG, Wei Fan WANG
Acta Mathematica Sinica . 2021, (2): 262 -278 .  DOI: 10.1007/s10114-020-9488-9