@article{EJDE_2015__2015__a34,
     author = {Xu,  Liping and Chen,  Haibo},
     title = {Existence and multiplicity of solutions for nonhomogeneous {Klein-Gordon-Maxwell} equations},
     journal = {Electronic journal of differential equations},
     year = {2015},
     volume = {2015},
     zbl = {1315.35073},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2015__2015__a34/}
}