@article{EJDE_2006__2006__a45,
     author = {El-Zahrani, Eada A. and Serag, Hassan M.},
     title = {Existence of weak solutions for nonlinear elliptic systems on $\Bbb{R}^N$},
     journal = {Electronic Journal of Differential Equations},
     publisher = {mathdoc},
     volume = {2006},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2006__2006__a45/}
}