@article{PismaZhETF.45.157,
    title = {Quantum rf emission in the spectrum of electron spin-spin interactions of a solid},
    author = {Avagyan, E. V. and Atsarkin, V. A. and Demidov, V. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {45},
    issue = {3},
    pages = {157},
    year = {1987},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18707.shtml},
}