@article{PismaZhETF.21.9,
    title = {Supersonic collapse of Langmuir waves},
    author = {Degtyarev, L. M. and Zakharov, V. E.},
    journal = {Письма в ЖЭТФ},
    volume = {21},
    issue = {1},
    pages = {9},
    year = {1975},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22245.shtml},
}