@article{TMF_1975_24_3_a4,
     author = {A. S. Schwarz},
     title = {Existence of solitons and generalized solitons for one-dimensional nonlinear equations},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {333--346},
     publisher = {mathdoc},
     volume = {24},
     number = {3},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1975_24_3_a4/}
}