@article{EJDE_2004__2004__a175,
     author = {Tintarev,  Kyril},
     title = {Nonlinear subelliptic {Schr\"odinger} equations with external magnetic field},
     journal = {Electronic journal of differential equations},
     year = {2004},
     volume = {2004},
     zbl = {1129.35320},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EJDE_2004__2004__a175/}
}