TY  - JOUR
AU  - Lü, Haishen
AU  - O'Regan, Donal
AU  - Agarwal, Ravi P.
TI  - Existence to singular boundary value problems with sign changing nonlinearities using an approximation method approach
JO  - Applications of Mathematics
PY  - 2007
SP  - 117
EP  - 135
VL  - 52
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.1007/s10492-007-0006-5/
DO  - 10.1007/s10492-007-0006-5
LA  - en
ID  - 10_1007_s10492_007_0006_5
ER  -