@article{PismaZhETF.14.469,
    title = {Nonlinear Effects in the Propagation of Monochromatic VLF Waves (Helicons) in the Magnetosphere},
    author = {Bud'ko, N. I. and Karpman, V. I. and Pokhotelov, O. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {14},
    issue = {8},
    pages = {469},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24936.shtml},
}