@article{JETPL.108.510,
    title = {},
    author = {Chtchelkatchev, N. M. and Ryltsev, R. E. and ,  and , },
    journal = {JETP Lett.},
    volume = {108},
    issue = {7},
    pages = {476},
    year = {2018},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X18190104},
    note = {[Pisma v ZhETF 108, 510 (2018)]}
}