@article{PismaZhETF.52.1214,
    title = {Evidence of classical percolation theory in the transport properties of ceramic $YBa_2Cu_3O_{7-\delta}$},
    author = {Gantmakher, V. F. and Neminskii, A. M. and Shovkun, D. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {52},
    issue = {11},
    pages = {1214},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17578.shtml},
}