%0 Journal Article
%A Bu, Shangquan
%A Cai, Gang
%T Periodic Solutions of Second Order Degenerate Differential Equations with Delay in Banach Spaces
%J Canadian mathematical bulletin
%D 2018
%P 717-737
%V 61
%N 4
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-2017-057-6/
%R 10.4153/CMB-2017-057-6
%F 10_4153_CMB_2017_057_6