@article{JETPL.103.298,
    title = {},
    author = {Egorov, S. V. and Uspenskaya, L. S.},
    journal = {JETP Lett.},
    volume = {103},
    issue = {4},
    pages = {272},
    year = {2016},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16040111},
    note = {[Pisma v ZhETF 103, 298 (2016)]}
}