@article{PismaZhETF.27.417,
    title = {Frequency singularities of the dissipation in the mixed state of pure type-II superconductors at low temperatures},
    author = {Kopnin, N. B.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {27},
    issue = {7},
    pages = {417},
    year = {1978},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_23730.shtml},
}