@article{JETPL.99.218,
    title = {},
    author = {,  and Kats, E. I. and , },
    journal = {JETP Lett.},
    volume = {99},
    issue = {4},
    pages = {191},
    year = {2014},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14040043},
    note = {[Pisma v ZhETF 99, 218 (2014)]}
}