@article{PismaZhETF.29.557,
    title = {Possibility of focusing of charged particles in experiments with colliding beams},
    author = {Kumakhov, M. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {29},
    issue = {9},
    pages = {557},
    year = {1979},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22146.shtml},
}