@article{PismaZhETF.20.644,
    title = {Acoustic self-induced transparency in $LiNbO_3$ :$Fe^{2+}$},
    author = {Samartsev, V. V. and Smolyakov, B. P. and Sharipov, R. Z.},
    journal = {Письма в ЖЭТФ},
    volume = {20},
    issue = {10},
    pages = {644},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27367.shtml},
}