@article{JETPL.100.281,
    title = {},
    author = {,  and Zybtsev, S. G. and Pokrovskii, V. Ya.},
    journal = {JETP Lett.},
    volume = {100},
    issue = {4},
    pages = {256},
    year = {2014},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14160085},
    note = {[Pisma v ZhETF 100, 281 (2014)]}
}