@article{PismaZhETF.11.328,
    title = {New Superconducting Modifications of Bismuth},
    author = {Il'ina, M. A. and Itskevich, E. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {11},
    issue = {7},
    pages = {328},
    year = {1970},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_26126.shtml},
}