@article{PismaZhETF.21.325,
    title = {Dependence of molecular-laser efficiency on the emission spectrum},
    author = {Igoshin, V. I. and Oraevskii, A. M.},
    journal = {Письма в ЖЭТФ},
    volume = {21},
    issue = {6},
    pages = {325},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22318.shtml},
}