@article{PismaZhETF.60.425,
    title = {Superconductivity above 20 K in barium-niobium-oxide compounds},
    author = {Gasparov, V. A. and Strukova, G. K. and Khassanov, S. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {60},
    issue = {6},
    pages = {425},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_20368.shtml},
}