@article{JETPL.106.132,
    title = {},
    author = {Kamerdzhiev, S. P. and ,  and ,  and Tolokonnikov, S. V. and Shitov, M. I.},
    journal = {JETP Lett.},
    volume = {106},
    issue = {3},
    pages = {139},
    year = {2017},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17150024},
    note = {[Pisma v ZhETF 106, 132 (2017)]}
}