@article{JETPL.96.381,
    title = {},
    author = {,  and Ovchinnikov, S. G. and Korshunov, M. M. and Nikolaev, S. V.},
    journal = {JETP Lett.},
    volume = {96},
    issue = {5},
    pages = {349},
    year = {2012},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_29934.shtml},
    note = {[Pisma v ZhETF 96, 381 (2012)]}
}