@article{PismaZhETF.55.384,
    title = {Polarization states in the energy gap of superconductor-ferromagnet superlattices},
    author = {Kuplevakhskii, S. V. and Fal'ko, I. I.},
    journal = {Письма в ЖЭТФ},
    volume = {55},
    issue = {7},
    pages = {384},
    year = {1992},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19269.shtml},
}