Geodesic
A generalization of Laguerre's theorems on zeros of entire functions
Matematičeskie zametki, Tome 61 (1997) no. 6, pp. 855-863.

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We prove some results generalizing the classical Laguerre theorems about the multiplicity and the number of zeros of the function $$ \sum_{n=0}^\infty\varphi(n)\frac{f^{(n)}(0)}{n!}z^n, $$ Some specific applications are given. 
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     title = {A generalization of {Laguerre's} theorems on zeros of entire functions},
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S. G. Merzlyakov. A generalization of Laguerre's theorems on zeros of entire functions. Matematičeskie zametki, Tome 61 (1997) no. 6, pp. 855-863. http://geodesic.mathdoc.fr/item/MZM_1997_61_6_a5/

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