%0 Journal Article %A Rabah Khemis %A Abdelouaheb Ardjouni %A Ahléme Bouakkaz %T Periodic solutions of a class of second order neutral differential equations with multiple different delays %J Ural mathematical journal %D 2022 %P 71-80 %V 8 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UMJ_2022_8_2_a5/ %G en %F UMJ_2022_8_2_a5