@article{JETPL.109.118,
    title = {},
    author = {Petrov, E. K. and Silkin, I. V. and Menshchikova, T. V. and Chulkov, E. V.},
    journal = {JETP Lett.},
    volume = {109},
    issue = {2},
    pages = {121},
    year = {2019},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19020103},
    note = {[Pisma v ZhETF 109, 118 (2019)]}
}