@article{JETPL.106.72,
    title = {},
    author = {Ramazanov, M. K. and Murtazaev, A. K.},
    journal = {JETP Lett.},
    volume = {106},
    issue = {2},
    pages = {86},
    year = {2017},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17140041},
    note = {[Pisma v ZhETF 106, 72 (2017)]}
}