TY  - JOUR
AU  - Agarwal, Ravi P.
AU  - O'Regan, Donal
AU  - Lakshmikantham, V.
TI  - Existence criteria for singular initial value problems with sign changing nonlinearities.
JO  - Mathematical Problems in Engineering
PY  - 2001
SP  - 503
VL  - 7
IS  - 6
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/articles/10.1155/S1024123X01001752/
DO  - 10.1155/S1024123X01001752
LA  - en
ID  - 10_1155_S1024123X01001752
ER  -