@article{PismaZhETF.26.608,
    title = {Realistic factorized S matrix in two-dimensional space-time with isotopic symmetry O(N)},
    author = {Zamolodchikov Aleksandr,  and Zamolodchikov Aleksei, },
    journal = {Письма в ЖЭТФ},
    volume = {26},
    issue = {8},
    pages = {608},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20961.shtml},
}