@article{JETPL.93.736,
    title = {},
    author = {,  and ,  and Kukushkin, I. V.},
    journal = {JETP Lett.},
    volume = {93},
    issue = {11},
    pages = {657},
    year = {2011},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_29316.shtml},
    note = {[Pisma v ZhETF 93, 736 (2011)]}
}