@article{PismaZhETF.21.286,
    title = {Concerning one possibility of lasing in the gamma band},
    author = {Baklanov, E. V. and Chebotaev, V. P.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {21},
    issue = {5},
    pages = {286},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22308.shtml},
}