@article{JETPL.95.91,
    title = {},
    author = {Popov, V. V. and ,  and Nikitov, S. A.},
    journal = {JETP Lett.},
    volume = {95},
    issue = {2},
    pages = {},
    year = {2012},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_29625.shtml},
    note = {[Pisma v ZhETF 95, 91 (2012)]}
}