@article{PismaZhETF.53.27,
    title = {Electron paramagnetism of a ring},
    author = {Kusmartsev, F. V.},
    journal = {Письма в ЖЭТФ},
    volume = {53},
    issue = {1},
    pages = {27},
    year = {1991},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17346.shtml},
}