@article{PismaZhETF.44.227,
    title = {Temperature dependence of the density of $^4He$ in narrow gaps near the $\lambda$ -point},
    author = {Panov, V. I. and Sobyanin, A. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {44},
    issue = {5},
    pages = {227},
    year = {1986},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21030.shtml},
}