@article{PismaZhETF.20.20,
    title = {New superconducting modifications of yttrium},
    author = {Brandt, N. B. and Berman, I. V. and Kurkin, Yu. P.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {20},
    issue = {1},
    pages = {20},
    year = {1974},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_27173.shtml},
}