@article{PismaZhETF.58.98,
    title = {Changes in the static dielectric constant of $YBa_2Cu_3O_y$ and $PrBa_2Cu_3O_y$ toward the insulator-metal transition},
    author = {Varyukhin, S. V. and Parfenov, O. E.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {58},
    issue = {2},
    pages = {98},
    year = {1993},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_18175.shtml},
}