@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 = {πΙΣΨΝΑ Χ φότζ}, volume = {20}, issue = {8}, pages = {540}, year = {1974}, doi = {}, url = {http://jetpletters.ru/ps/0/article_27335.shtml}, }