@article{PismaZhETF.16.3,
    title = {Laser Based on. Manganese Centers in Zinc Sulfide},
    author = {Popov, Yu. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {16},
    issue = {1},
    pages = {3},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26711.shtml},
}