@article{JETPL.108.627,
    title = {},
    author = {Ryzhkin, M. I. and Ryzhkin, I. A. and Kashin, A. M. and ,  and Sinitsyn, V. V.},
    journal = {JETP Lett.},
    volume = {108},
    issue = {9},
    pages = {596},
    year = {2018},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_32962.shtml},
    note = {[Pisma v ZhETF 108, 627 (2018)]}
}