TY  - JOUR
AU  - Serag, Hassan M.
AU  - El-Zahrani, Eada A.
TI  - Maximum principle and existence of positive solutions for nonlinear systems on $\Bbb R^N$
JO  - Electronic Journal of Differential Equations
PY  - 2005
VL  - 2005
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/EJDE_2005__2005__a4/
LA  - en
ID  - EJDE_2005__2005__a4
ER  -