@article{JETPL.109.301,
    title = {},
    author = {Kudryashov, S. I. and ,  and Ageev, E. I. and , },
    journal = {JETP Lett.},
    volume = {109},
    issue = {5},
    pages = {298},
    year = {2019},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19050047},
    note = {[Pisma v ZhETF 109, 301 (2019)]}
}