@article{PismaZhETF.52.1040,
    title = {Dynamic diffractive focusing of intermediate-energy electrons in a crystal and possible use of this effect for analyzing surface layers},
    author = {Vergasov, V. L.},
    journal = {πΙΣΨΝΑ Χ φότζ},
    volume = {52},
    issue = {8},
    pages = {1040},
    year = {1990},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_17530.shtml},
}