We consider a differential equation f (n)+ A n− 1 (z) f (n− 1)+…+ A 1 (z) f'+ A 0 (z) f= 0, where A 0 (z),..., A n− 1 (z) are entire functions with A 0 (z){¬≡} 0. Suppose that there exist a positive number μ, and a sequence ...