@article{PismaZhETF.1.22,
    title = {Concerning the observation of transitions between hyperfine sublevels of paramagnetic atoms},
    author = {Matyash, I. V. and Doroshev, V. D. and Revenko, Yu. F.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {1},
    issue = {3},
    pages = {22},
    year = {1965},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24405.shtml},
}