@article{JETPL.98.336,
    title = {},
    author = {Molotkov, S. N. and , },
    journal = {JETP Lett.},
    volume = {98},
    issue = {5},
    pages = {298},
    year = {2013},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_30414.shtml},
    note = {[Pisma v ZhETF 98, 336 (2013)]}
}