@article{DAN_1981_261_1_a1,
     author = {A. R. Its},
     title = {Asymptotics of solutions of the nonlinear {Schr\"odinger} equation and isomonodromic deformations of systems of linear differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {14--18},
     publisher = {mathdoc},
     volume = {261},
     number = {1},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_261_1_a1/}
}