@article{JETPL.100.349,
    title = {},
    author = {Ratnikov, P. V. and Silin, A. P.},
    journal = {JETP Lett.},
    volume = {100},
    issue = {5},
    pages = {311},
    year = {2014},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14170056},
    note = {[Pisma v ZhETF 100, 349 (2014)]}
}