@article{JETPL.93.123,
    title = {},
    author = {Makarov, G. N. and Petin, A. N.},
    journal = {JETP Lett.},
    volume = {93},
    issue = {3},
    pages = {109},
    year = {2011},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_29139.shtml},
    note = {[Pisma v ZhETF 93, 123 (2011)]}
}