@article{JETPL.100.457,
    title = {},
    author = {Molotkov, S. N.},
    journal = {JETP Lett.},
    volume = {100},
    issue = {6},
    pages = {413},
    year = {2014},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X1418012X},
    note = {[Pisma v ZhETF 100, 457 (2014)]}
}