@article{PismaZhETF.49.163,
    title = {Study of the 3d band of copper in $Y_1 Ba_2Cu_3O_{7-x}$},
    author = {Babaev, V. G. and Khvostov, V. V. and Shibaev, P. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {49},
    issue = {3},
    pages = {163},
    year = {1989},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16866.shtml},
}