@article{PismaZhETF.2.182,
    title = {К вопросу о различии $\nu_\mu -\nu_e$},
    author = {Ушаков, В. В.},
    journal = {Письма в ЖЭТФ},
    volume = {2},
    issue = {4},
    pages = {182},
    year = {1965},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_11841.shtml},
}