@article{JETPL.112.851,
    title = {},
    author = {},
    journal = {JETP Lett.},
    volume = {112},
    issue = {12},
    pages = {},
    year = {2020},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_34416.shtml},
    note = {[Pisma v ZhETF 112, 851 (2020)]}
}