@article{JETPL.100.297,
    title = {},
    author = {,  and ,  and ,  and , },
    journal = {JETP Lett.},
    volume = {100},
    issue = {4},
    pages = {271},
    year = {2014},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_30901.shtml},
    note = {[Pisma v ZhETF 100, 297 (2014)]}
}