@article{PismaZhETF.13.254,
    title = {Coherent Radiation of Charged Particles Channelled in a Crystal},
    author = {Belyakov, V. A.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {13},
    issue = {5},
    pages = {254},
    year = {1971},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_24074.shtml},
}