@article{PismaZhETF.20.540,
    title = {Transitions of $AI_2O_3$, NaCI, and S into the conducting state},
    author = {Vereshchagin, L. F. and Yakovlev, E. N. and Vinogradov, B. V. and Sakun, V. P.},
    journal = {Письма в ЖЭТФ},
    volume = {20},
    issue = {8},
    pages = {540},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27335.shtml},
}