@article{PismaZhETF.50.422,
    title = {High-frequency Raman scattering in tetragonal $GdBa_2Cu_3O_{6+x}$},
    author = {Fefer, E. M. and Blumberg, G. E. and Past, Ya. O. and Rebane, L. A. and Leonyuk, L. I.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {50},
    issue = {10},
    pages = {422},
    year = {1989},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17148.shtml},
}