@article{JETPL.110.126,
    title = {},
    author = {Val?kov, V. V. and Mitskan, V. A. and ,  and Shustin, M. S. and Aksenov, S. V.},
    journal = {JETP Lett.},
    volume = {110},
    issue = {2},
    pages = {140},
    year = {2019},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_33549.shtml},
    note = {[Pisma v ZhETF 110, 126 (2019)]}
}