%0 Journal Article %A Hai-De Gou %T Existence of ω-periodic solutions for second order delay differential equation in Banach spaces %J Filomat %D 2022 %P 5347 %V 36 %N 16 %U http://geodesic.mathdoc.fr/articles/10.2298/FIL2216347G/ %R 10.2298/FIL2216347G %G en %F 10_2298_FIL2216347G