KHEMIS , Malak ; BOUAKKAZ , Ahlème2025-01-222025-01-222024http://dspace.univ-skikda.dz:4000/handle/123456789/3798The main purpose of the current work is to investigate the existence, uniqueness and continuous dependence on parameters of positive periodic solutions for a first order neutral differential equation with iterative terms. For achieving our goal , we convert the considered problem into an integral equation with a Green's kernel and then for establishing the desired results , we apply the Krasnoselskii and Banach fixed point theorems with the help of some useful properties of the obtained Green skernel.enMasters degree Thesis