@article{PismaZhETF.9.89,
    title = {Double Ferromagnetic Resonance},
    author = {Deryugin, I. A. and Zaporozhets, V. V. and Lysenko, M. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {9},
    issue = {2},
    pages = {89},
    year = {1969},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25280.shtml},
}