@article{JETPL.101.453,
    title = {},
    author = {Volodin, V. A. and , },
    journal = {JETP Lett.},
    volume = {101},
    issue = {6},
    pages = {419},
    year = {2015},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X15060120},
    note = {[Pisma v ZhETF 101, 453 (2015)]}
}