@article{PismaZhETF.16.209,
    title = {Cooperative Tunnel Effect in Semiconducting Antimony Compounds Having a Mixed Valence},
    author = {Aleksandrov, A. Yu. and Ionov, S. I. and Baltrunas, D. A. and Makarov, E. F.},
    journal = {Письма в ЖЭТФ},
    volume = {16},
    issue = {4},
    pages = {209},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26771.shtml},
}