@article{JETPL.108.230,
    title = {},
    author = {Gritsenko, V. A. and Perevalov, T. V. and Volodin, V. A. and ,  and ,  and Prosvirin, I. P.},
    journal = {JETP Lett.},
    volume = {108},
    issue = {4},
    pages = {226},
    year = {2018},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X18160026},
    note = {[Pisma v ZhETF 108, 230 (2018)]}
}