@article{PismaZhETF.55.25,
    title = {Optical bistability and critical slowing in the amorphous semiconductor $GeS_2$},
    author = {Lyubin, V. M. and Tikhomirov, V. K.},
    journal = {Письма в ЖЭТФ},
    volume = {55},
    issue = {1},
    pages = {25},
    year = {1992},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19179.shtml},
}