TY  - JOUR
AU  - Li, Zhixiang
AU  - Wang, Xiao
TI  - Existence of positive periodic solutions for neutral functional differential equations
JO  - Electronic Journal of Differential Equations
PY  - 2006
VL  - 2006
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/EJDE_2006__2006__a94/
LA  - en
ID  - EJDE_2006__2006__a94
ER  -