@article{JETPL.98.529,
    title = {},
    author = {,  and , },
    journal = {JETP Lett.},
    volume = {98},
    issue = {8},
    pages = {471},
    year = {2013},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X13200071},
    note = {[Pisma v ZhETF 98, 529 (2013)]}
}