@article{PismaZhETF.16.395,
    title = {Experimental Observation of Phonon Generation in Point Contacts		},
    author = {Yanson, I. K. and Bogatina, N. I.},
    journal = {Письма в ЖЭТФ},
    volume = {16},
    issue = {7},
    pages = {395},
    year = {1972},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26913.shtml},
}