@article{PismaZhETF.4.352,
    title = {Electrostatic Instability of a Bounded Ion Beam},
    author = {Popov, Yu. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {4},
    issue = {9},
    pages = {352},
    year = {1966},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25034.shtml},
}