@article{PismaZhETF.68.791,
    title = {On the theory of chirped optical soliton in fiber lines with varying dispersion},
    author = {Turitsyn, S. K. and Mezentsev, V. K.},
    journal = {Письма в ЖЭТФ},
    volume = {68},
    issue = {11},
    pages = {791},
    year = {1998},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_14801.shtml},
}