@article{DAN_1989_305_3_a19,
     author = {A. V. Gurevich and N. I. Gershenzon and A. L. Krylov and N. G. Mazur},
     title = {Solutions of the {sine-Gordon} equation by the method of modulated},
     journal = {Doklady Akademii Nauk},
     pages = {593--598},
     publisher = {mathdoc},
     volume = {305},
     number = {3},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_305_3_a19/}
}