@article{PismaZhETF.25.419,
    title = {Scattering of high-frequency sound near the X transition in He},
    author = {Lyuksyutov, I. F. and Pokrovskii, V. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {25},
    issue = {9},
    pages = {419},
    year = {1977},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21449.shtml},
}