@article{ZNSL_1992_199_a11,
     author = {T. Takebe},
     title = {On uniqueness of formfactors for the reduced {sine-Gordon} model},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {177--181},
     year = {1992},
     volume = {199},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1992_199_a11/}
}