@article{PismaZhETF.7.204,
    title = {Pulsed Superradiance at the Green Line of Thallium in Til Vapor},
    author = {Isaev, A. A. and Petrash, G. G.},
    journal = {Письма в ЖЭТФ},
    volume = {7},
    issue = {6},
    pages = {204},
    year = {1968},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25618.shtml},
}