@article{PismaZhETF.58.505,
    title = {Nonlinear kink oscillations of a magnetic flux tube},
    author = {Ryutova, M. and Sakai, Jun-ichi.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {58},
    issue = {7},
    pages = {505},
    year = {1993},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_4761.shtml},
}