@article{PismaZhETF.46.105,
    title = {Ferromagnetic resonance and the phase diagram of a 2D ferromagnet ($CH_3NH_3)_2CuCl_4$},
    author = {Demokritov, S. O. and Kreines, N. M. and Kydinov, V. I. and Petrov, S. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {46},
    issue = {3},
    pages = {105},
    year = {1987},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18520.shtml},
}