@article{PismaZhETF.59.262,
    title = {Superconductivity in $YBa_2Cu_3O_x$},
    author = {Blackstead, H. A. and Dow, J. D.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {59},
    issue = {4},
    pages = {262},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_5078.shtml},
}