@article{IM2_1997_61_4_a4,
     author = {P. I. Naumkin},
     title = {Solution asymptotics at large times for the non-linear {Schr\"odinger} equation},
     journal = {Izvestiya. Mathematics },
     pages = {757--794},
     publisher = {mathdoc},
     volume = {61},
     number = {4},
     year = {1997},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1997_61_4_a4/}
}