@article{ZNSL_1992_200_a3,
     author = {V. S. Buslaev and G. S. Perelman},
     title = {Nonlinear scattering: the states which are close to a soliton},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {38--50},
     publisher = {mathdoc},
     volume = {200},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1992_200_a3/}
}