@article{PismaZhETF.5.122,
    title = {Influence of Rate of Disintegration of the Lower Laser Level on the Power of a $CO_2$ Laser},
    author = {Sobolev, N. N. and Sokovikov, V. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {5},
    issue = {4},
    pages = {122},
    year = {1967},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25117.shtml},
}