TY  - JOUR
AU  - Bu, Shangquan
AU  - Cai, Gang
TI  - Periodic Solutions of Second Order Degenerate Differential Equations with Delay in Banach Spaces
JO  - Canadian mathematical bulletin
PY  - 2018
SP  - 717
EP  - 737
VL  - 61
IS  - 4
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CMB-2017-057-6/
DO  - 10.4153/CMB-2017-057-6
ID  - 10_4153_CMB_2017_057_6
ER  -