@article{PismaZhETF.47.111,
    title = {Hypersound amplification by an intense hypersonic field in ruby},
    author = {Ganapol'skii, E. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {47},
    issue = {2},
    pages = {111},
    year = {1988},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16465.shtml},
}