摘要: We proved:Let F be a family of meromorphic functions in a domain D and a≠0,b∈C.If f′(z)-a(f(z))2≠b,f≠0 and the poles of f(z) are of multiplicity>=3 for each f(z)∈F, then F is normal in D.
                                                        
                              
                             
                            
                            																								
								
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                                        															章文华 . 亚纯函数的一个正规定则[J]. 数学季刊, 2006, 21(4): 577-580.	
																																									     												                                                                                                        	                                                                                                                      Zhang Wen-hua. On Normal Criterion of Meromorphic Functions [J]. Chinese Quarterly Journal of Mathematics, 2006, 21(4): 577-580.