In this paper,we discuss the normality of a family of meromorphic functions whichand whose differential polynomials omit a fixed value and generalized results due to Yang Lo,Chen Huaihai, Zhu Xiurong and Gong Xiang Hong.
Criteria for Normality of a Family of Meromoaphic Functions. Acta Mathematica Sinica, Chinese Series, 1994, 37(1) https://doi.org/10.12386/A1994sxxb0013
