@article{PismaZhETF.17.534,
    title = {Sound Propagation in Solutions of Two Superfluid Liquids},
    author = {Khalatnikov, I. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {17},
    issue = {9},
    pages = {534},
    year = {1973},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23616.shtml},
}