TY  - JOUR
AU  - Liu,  Yansheng
TI  - Multiple positive solutions to fourth-order singular boundary-value problems in abstract spaces
JO  - Electronic journal of differential equations
PY  - 2004
VL  - 2004
UR  - http://geodesic.mathdoc.fr/item/EJDE_2004__2004__a99/
LA  - en
ID  - EJDE_2004__2004__a99
ER  -