@article{MZ_1981__177_173059,
     author = {Nakao Hayashi and Masayoshi Tsutsumi},
     title = {Classical {Solutions} of {Nonlinear} {Schr\"odinger} {Equations} in {Higher} {Dimensions.}},
     journal = {Mathematische Zeitschrift},
     pages = {217--234},
     publisher = {mathdoc},
     volume = {177},
     year = {1981},
     zbl = {0438.35028},
     url = {http://geodesic.mathdoc.fr/item/MZ_1981__177_173059/}
}