@article{PismaZhETF.13.713,
    title = {Coherent Bremsstrahlung of Electrons and Positrons of Ultrahigh Energy in Crystals},
    author = {Akhiezer, А. I. and Fomin, P. I. and Shul'ga, N. F.},
    journal = {Письма в ЖЭТФ},
    volume = {13},
    issue = {12},
    pages = {713},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24382.shtml},
}