TY  - JOUR
AU  - A. El-Haffaf
TI  - Existence Theorems for a Fourth Order Boundary Value Problem
JO  - Bulletin of the Polish Academy of Sciences. Mathematics
PY  - 2009
SP  - 135
EP  - 148
VL  - 57
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/ba57-2-7/
DO  - 10.4064/ba57-2-7
LA  - en
ID  - 10_4064_ba57_2_7
ER  -