@article{AIHPA_1993__58_1_85_0,
     author = {Cipolatti, Rolci},
     title = {On the instability of ground states for a {Davey-Stewartson} system},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {85--104},
     publisher = {Gauthier-Villars},
     volume = {58},
     number = {1},
     year = {1993},
     mrnumber = {1208793},
     zbl = {0784.35106},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1993__58_1_85_0/}
}