@article{PismaZhETF.2.218,
    title = {Self Focusing of Wave Beams in Nonlinear Media},
    author = {Talanov, V. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {2},
    issue = {5},
    pages = {218},
    year = {1965},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24504.shtml},
}