@article{PismaZhETF.38.520,
    title = {Steady-state self-focusing of whistlers},
    author = {Karpman, V. I. and Shagalov, A. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {38},
    issue = {11},
    pages = {520},
    year = {1983},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22687.shtml},
}