@article{PismaZhETF.48.152,
    title = {Dependence of the low-temperature specific heat of $RBa_2Cu_3O_x$ ceramics on the nature of the rare-earth ion R},
    author = {Anshukova, N. V. and Bugoslavskii, Yu. V. and Veselago, V. G. and Golovashkin, A. I. and Ershov, O. V. and Zaitsev, I. A. and Ivanenko, O. M. and Kordyuk, A. A. and Minakov, A. A. and Mitsen, K. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {48},
    issue = {3},
    pages = {152},
    year = {1988},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16667.shtml},
}