@article{PismaZhETF.25.499,
    title = {Exact two-particle S matrix of quantum solitons of the sine-Gordon model},
    author = {Zamolodchikov, A. B.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {25},
    issue = {10},
    pages = {499},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21471.shtml},
}