@article{PismaZhETF.10.5,
    title = {Emission Stimulated by Explosion of $HN_3$ in $CO_2$},
    author = {Basov, N. G. and Gromov, V. V. and Koshelev, E. L. and Markin, E. P. and Oraevskii, A. N.},
    journal = {Письма в ЖЭТФ},
    volume = {10},
    issue = {1},
    pages = {5},
    year = {1969},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25668.shtml},
}