@article{JETPL.108.155,
    title = {},
    author = {Kamerdzhiev, S. P. and ,  and ,  and Tolokonnikov, S. V.},
    journal = {JETP Lett.},
    volume = {108},
    issue = {3},
    pages = {155},
    year = {2018},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X18150018},
    note = {[Pisma v ZhETF 108, 155 (2018)]}
}