TY  - JOUR
AU  - Xi, Shouliang
AU  - Jia, Mei
AU  - Ji, Huipeng
TI  - Multiple nonnegative solutions for second-order boundary-value problems with sign-changing nonlinearities
JO  - Electronic Journal of Differential Equations
PY  - 2009
VL  - 2009
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/EJDE_2009__2009__a147/
LA  - en
ID  - EJDE_2009__2009__a147
ER  -