@article{PismaZhETF.12.381,
    title = {Stationary Relativistic Gas in Cosmic Objects and Background in 1 - 20 MeV Region},
    author = {Syunyaev, R. A.},
    journal = {Письма в ЖЭТФ},
    volume = {12},
    issue = {7},
    pages = {381},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26333.shtml},
}