@article{JETPL.106.496,
    title = {},
    author = {,  and ,  and Lebedev, A. M. and Chumakov, R. G. and ,  and ,  and Kashkarov, P. K.},
    journal = {JETP Lett.},
    volume = {106},
    issue = {8},
    pages = {517},
    year = {2017},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17200073},
    note = {[Pisma v ZhETF 106, 496 (2017)]}
}