@article{PismaZhETF.11.410,
    title = {Nonlinear Waves in a Relativistic Electron Beam},
    author = {Fainberg, Ya. B. and Shapiro, V. D. and Shevchenko, V. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {11},
    issue = {8},
    pages = {410},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26150.shtml},
}