@article{PismaZhETF.10.458,
    title = {Thermodynamic Limit of the Luminescence Efficiency},
    author = {Chukova, Yu. P.},
    journal = {Письма в ЖЭТФ},
    volume = {10},
    issue = {9},
    pages = {458},
    year = {1969},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26784.shtml},
}