@article{JETPL.109.200,
    title = {},
    author = {Timofeev, V. E. and Sorokin, A. O. and , },
    journal = {JETP Lett.},
    volume = {109},
    issue = {3},
    pages = {207},
    year = {2019},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19030135},
    note = {[Pisma v ZhETF 109, 200 (2019)]}
}