@article{PismaZhETF.43.327,
    title = {A cluster in a granular superconductor},
    author = {Perov, A. P.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {43},
    issue = {7},
    pages = {327},
    year = {1986},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_21337.shtml},
}