@article{JETPL.99.382,
    title = {},
    author = {Bobkov, A. M. and Bobkova, I. V.},
    journal = {JETP Lett.},
    volume = {99},
    issue = {6},
    pages = {333},
    year = {2014},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X1406006X},
    note = {[Pisma v ZhETF 99, 382 (2014)]}
}