@article{TMF_1984_60_3_a2,
     author = {F. A. Smirnov},
     title = {Quantum {Gel'fand{\textendash}Levitan{\textendash}Marchenko} equations for the {sine-Gordon} model},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {356--371},
     year = {1984},
     volume = {60},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1984_60_3_a2/}
}