@article{PismaZhETF.13.380,
    title = {Instability of Spin Waves in FerroelectriÓ Antiferromagnets in External Fields},
    author = {Akhiezer, I. A. and Davydov, L. N.},
    journal = {ðÉÓØÍÁ × öüôæ},
    volume = {13},
    issue = {7},
    pages = {380},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24275.shtml},
}