@article{JETPL.109.224,
    title = {},
    author = {Kraftmakher, G. A. and Butylkin, V. S. and Kazantsev, Yu. N. and Mal?tsev, V. P.},
    journal = {JETP Lett.},
    volume = {109},
    issue = {4},
    pages = {232},
    year = {2019},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19040040},
    note = {[Pisma v ZhETF 109, 224 (2019)]}
}