中国科学院数学与系统科学研究院期刊网
AMS
Differential Inequalities, Normality and Quasi-normality
Xiao Jun LIU, Shahar NEVO, Xue Cheng PANG
Acta Mathematica Sinica . 2014, (2): 277 -282 .  DOI: 10.1007/s10114-014-2542-8