@article{PismaZhETF.13.89,
    title = {Resonance in Superconductors},
    author = {Azbel', M. Ya. and Mints, R. G.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {13},
    issue = {2},
    pages = {89},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27165.shtml},
}