@article{JETPL.94.301,
    title = {},
    author = {Gusakov, E. Z. and Popov, A. Yu.},
    journal = {JETP Lett.},
    volume = {94},
    issue = {4},
    pages = {277},
    year = {2011},
    doi = {},
    url = {http://jetpletters.ru/ps/0/article_29490.shtml},
    note = {[Pisma v ZhETF 94, 301 (2011)]}
}