中国科学院数学与系统科学研究院期刊网
AMS
On Homogeneous Differential Polynomials of Meromorphic Functions
Wei Chuan LIN, Hong Xun YI
Acta Mathematica Sinica . 2005, (2): 261 -266 .  DOI: 10.1007/s10114-004-0326-2