%0 Journal Article %A Soulahia, Imene %A Ardjouni, Abdelouaheb %A Djoudi, Ahcene %T Existence of nonnegative periodic solutions in neutral integro-differential equations with functional delay %J Commentationes Mathematicae Universitatis Carolinae %D 2015 %P 23-44 %V 56 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14712/1213-7243.015.103/ %R 10.14712/1213-7243.015.103 %G en %F 10_14712_1213_7243_015_103