@article{JETPL.93.182,
    title = {},
    author = {Nekrasov, I. A. and , },
    journal = {JETP Lett.},
    volume = {93},
    issue = {3},
    pages = {166},
    year = {2011},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_29151.shtml},
    note = {[Pisma v ZhETF 93, 182 (2011)]}
}