@article{TMF_2015_184_1_a4,
     author = {E. L. Aero and A. N. Bulygin and Yu. V. Pavlov},
     title = {Solutions of {the~sine-Gordon} equation with a~variable amplitude},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {79--91},
     year = {2015},
     volume = {184},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2015_184_1_a4/}
}