@article{PismaZhETF.43.33,
    title = {Unusual behavior of the magnetic resonance frequencies of $HoFeO_3$ in the spin-flip region},
    author = {Balbashov, A. M. and Kozlov, G. V. and Lebedev, S. P. and Mukhin, A. A. and Pronin, A. Yu. and Prokhorov, A. S. and Prokhorov, A. M.},
    journal = {Письма в ЖЭТФ},
    volume = {43},
    issue = {1},
    pages = {33},
    year = {1986},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21227.shtml},
}