@article{PismaZhETF.9.494,
    title = {Critical Current of a Superconducting Film in a Mixed State},
    author = {Smidt, V. V.},
    journal = {Письма в ЖЭТФ},
    volume = {9},
    issue = {8},
    pages = {494},
    year = {1969},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25397.shtml},
}