فهرس المقالات سمیرا سیاه منصوری المقاله 1 - The existence and uniqueness of the solution for uncertain functional differential equations 20.1001.1.25382217.2020.14.2.3.7 Nazanin Ahmadi Samira Siahmansouri Theory of Approximation and Applications , العدد 1 , السنة 14 , بهار 2020