@article{PismaZhETF.15.52,
    title = {Contribution to the Theory of Instability of Charged-particle Beams Passing Through an Inhomogeneous Medium, and Instability of Non-uniform Moving Beams},
    author = {Buts, V. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {15},
    issue = {1},
    pages = {52},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26485.shtml},
}