@article{PismaZhETF.47.338,
    title = {Optical properties and conductivity mechanism of $YBa_2Cu_3O_{7-\delta}$ single crystals},
    author = {Samokhvalov, A. A. and Chebotaev, N. M. and Loshkareva, N. N. and Sukhorukov, Yu. P. and Kostylev, V. A. and Gizhevskii, B. A. and Naumov, S. V.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {47},
    issue = {7},
    pages = {338},
    year = {1988},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_16525.shtml},
}