@article{JETPL.107.422,
    title = {},
    author = {Mareev, E. I. and Migal, E. A. and Potemkin, F. V.},
    journal = {JETP Lett.},
    volume = {107},
    issue = {7},
    pages = {402},
    year = {2018},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X18070032},
    note = {[Pisma v ZhETF 107, 422 (2018)]}
}