@article{EJDE_2006__2006__a145,
     author = {El-Zahrani,  Eada A. and Serag,  Hassan M.},
     title = {Existence of weak solutions for nonlinear elliptic systems on {\(\mathbb{R}^N\)}},
     journal = {Electronic journal of differential equations},
     year = {2006},
     volume = {2006},
     zbl = {1128.35328},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2006__2006__a145/}
}