%0 Journal Article
%A Bouzid Mansouri
%A Abdelouaheb Ardjouni
%A Ahcene Djoudi
%T Existence of positive periodic solutions for fourth-order nonlinear neutral differential equations with variable coefficients
%J Buletinul Academiei de Ştiinţe a Republicii Moldova. Matematica
%D 2019
%P 10-21
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/BASM_2019_3_a1/
%G en
%F BASM_2019_3_a1