@article{JETPL.98.28,
    title = {},
    author = {,  and , },
    journal = {JETP Lett.},
    volume = {98},
    issue = {1},
    pages = {24},
    year = {2013},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_30340.shtml},
    note = {[Pisma v ZhETF 98, 28 (2013)]}
}