@article{TMF_1990_82_1_a3,
     author = {A. B. Givental'},
     title = {Stability criterion for solitons},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {28--33},
     publisher = {mathdoc},
     volume = {82},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1990_82_1_a3/}
}