@article{PismaZhETF.29.661,
    title = {High-temperature superconducting phase in rare-earth metal compounds},
    author = {Savchenko, M. A. and Stefanovich, A. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {29},
    issue = {11},
    pages = {661},
    year = {1979},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_22193.shtml},
}