中国科学院数学与系统科学研究院期刊网
FOUR COLOURINGS OF MAXIMUM OUTER PLANAR GRAPHS UNDER BOUNDARV CONDITIONS
XIE LITONG; LIU GUIZHEN
Acta Mathematicae Applicatae Sinica . 1998, (1): 0 -0 .  DOI: 10.12387/C1998025