@article{PismaZhETF.35.193,
    title = {Pulse propagation in a long laser amplifier},
    author = {Manakov, S. V.},
    journal = {Письма в ЖЭТФ},
    volume = {35},
    issue = {5},
    pages = {193},
    year = {1982},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19871.shtml},
}