@article{PismaZhETF.13.167,
    title = {Self - focusing  of a Vector Field},
    author = {Eleonskii, V. N. and Silin, V. P.},
    journal = {Письма в ЖЭТФ},
    volume = {13},
    issue = {3},
    pages = {167},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23995.shtml},
}