TY - JOUR AU - Rabah Khemis AU - Abdelouaheb Ardjouni AU - Ahléme Bouakkaz TI - Periodic solutions of a class of second order neutral differential equations with multiple different delays JO - Ural mathematical journal PY - 2022 SP - 71 EP - 80 VL - 8 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UMJ_2022_8_2_a5/ LA - en ID - UMJ_2022_8_2_a5 ER -