@article{JETPL.99.467,
    title = {},
    author = {Denisov, K. S. and Averkiev, N. S.},
    journal = {JETP Lett.},
    volume = {99},
    issue = {7},
    pages = {400},
    year = {2014},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14070091},
    note = {[Pisma v ZhETF 99, 467 (2014)]}
}