@article{PismaZhETF.5.57,
    title = {Critical Temperature of Small Superconductors},
    author = {Shapoval, E. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {5},
    issue = {2},
    pages = {57},
    year = {1967},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_25096.shtml},
}