@article{PismaZhETF.59.491,
    title = {Above-barrier $\gamma$-ray emission by ultrahigh-energy electrons in oriented single crystals},
    author = {Kononets, Yu. V. and Tupitsyn, I. S.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {59},
    issue = {8},
    pages = {491},
    year = {1994},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_19780.shtml},
}