@article{JETPL.104.797,
    title = {},
    author = {Prudnikov, V. V. and Prudnikov, P. V. and ,  and , },
    journal = {JETP Lett.},
    volume = {104},
    issue = {11},
    pages = {776},
    year = {2016},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16230077},
    note = {[Pisma v ZhETF 104, 797 (2016)]}
}