中国科学院数学与系统科学研究院期刊网
AMS
Neighbor Sum Distinguishing Total Colorings of Triangle Free Planar Graphs
Ji Hui WANG, Qiao Ling, MA Xue HAN
Acta Mathematica Sinica . 2015, (2): 216 -224 .  DOI: 10.1007/s10114-015-4114-y