@article{PismaZhETF.2.566,
    title = {Dispersion of Sound in Superfluid Helium},
    author = {Khalatnikov, I. M. and Chernikova, D. M.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {2},
    issue = {12},
    pages = {566},
    year = {1965},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24670.shtml},
}