The zeros of exponential polynomials (I)
Compositio Mathematica, Tome 26 (1973) no. 1, pp. 69-78. 
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Moreno, Carlos Julio. The zeros of exponential polynomials (I). Compositio Mathematica, Tome 26 (1973) no. 1, pp. 69-78. http://archive.numdam.org/item/CM_1973__26_1_69_0/

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