@article{JETPL.103.572,
    title = {},
    author = {Kukushkin, V. I. and ,  and Egorov, S. V. and Solov?ev, V. V. and Kukushkin, I. V.},
    journal = {JETP Lett.},
    volume = {103},
    issue = {8},
    pages = {508},
    year = {2016},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16080038},
    note = {[Pisma v ZhETF 103, 572 (2016)]}
}