@article{JETPL.106.737,
    title = {},
    author = {Volkov, M. K. and ,  and Pivovarov, A. A.},
    journal = {JETP Lett.},
    volume = {106},
    issue = {12},
    pages = {771},
    year = {2017},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X1724002X},
    note = {[Pisma v ZhETF 106, 737 (2017)]}
}