@article{JETPL.103.720,
    title = {},
    author = {Alekseev, P. A. and ,  and Savchenkov, P. S. and , },
    journal = {JETP Lett.},
    volume = {103},
    issue = {10},
    pages = {636},
    year = {2016},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16100064},
    note = {[Pisma v ZhETF 103, 720 (2016)]}
}