@article{PismaZhETF.16.378,
    title = {Self Focusing of Light in a Plasma and Supersonic Ionization Wave in a Laser Beam},
    author = {Batanov, V. A. and Bunkin, F. V. and Prokhorov, A. M. and Fedorov, V. B.},
    journal = {Письма в ЖЭТФ},
    volume = {16},
    issue = {7},
    pages = {378},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26908.shtml},
}