@article{PismaZhETF.22.454,
    title = {Nonlinear damping of helicons in metals},
    author = {Bugal'ter, G. A. and Demikhovskii, V. Ya.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {22},
    issue = {9},
    pages = {454},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23368.shtml},
}