@article{AIHPA_1992__57_4_385_0,
     author = {Hayashi, Nakao},
     title = {Smoothing effect of small analytic solutions to nonlinear {Schr\"odinger} equations},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {385--394},
     publisher = {Gauthier-Villars},
     volume = {57},
     number = {4},
     year = {1992},
     mrnumber = {1198983},
     zbl = {0766.35052},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1992__57_4_385_0/}
}