@article{PismaZhETF.29.276,
    title = {Experimental investigation of beam collapse during the self-focusing in a nonlinear medium},
    author = {Askar'yan, G. A. and Mukhamadzhanov, M. A.},
    journal = {Письма в ЖЭТФ},
    volume = {29},
    issue = {5},
    pages = {276},
    year = {1979},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22074.shtml},
}