@article{JETPL.109.605,
    title = {},
    author = {Sadovnikov, S. I. and Gusev, A. I.},
    journal = {JETP Lett.},
    volume = {109},
    issue = {9},
    pages = {584},
    year = {2019},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19090078},
    note = {[Pisma v ZhETF 109, 605 (2019)]}
}