@article{PismaZhETF.46.94,
    title = {Space-time focusing of a magnetostatic wave packet in a nonstationary medium},
    author = {Preobrazhenskii, V. L. and Rybakov, V. P. and Fetisov, Yu. K.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {46},
    issue = {3},
    pages = {94},
    year = {1987},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18516.shtml},
}