@article{DE_1993_29_6_a12,
     author = {L. A. Kalyakin},
     title = {Asymptotics of a double integral of {Fourier} type in the theory of soliton perturbation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1010--1024},
     year = {1993},
     volume = {29},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1993_29_6_a12/}
}