@article{PismaZhETF.45.480,
    title = {Surface tension of helium II and extrapolation length for the order parameter},
    author = {Sobyanin, A. A. and Stratonnikov, A. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {45},
    issue = {10},
    pages = {480},
    year = {1987},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18832.shtml},
}