中国科学院数学与系统科学研究院期刊网
Generalization of on Erds Question under Conic
Hong Guang FU(1); Wei Min WANG(1); Bing Zhen ZENG(2)
Acta Mathematica Sinica, Chinese Series . 2008, (3): 423 -434 .  DOI: 10.12386/A2008sxxb0050