@article{JETPL.104.637,
    title = {},
    author = {,  and Monakhov, A. M. and ,  and Averkiev, N. S.},
    journal = {JETP Lett.},
    volume = {104},
    issue = {9},
    pages = {615},
    year = {2016},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16210050},
    note = {[Pisma v ZhETF 104, 637 (2016)]}
}