@article{JETPL.101.505,
    title = {},
    author = {Dolganov, P. V. and Shuravin, N. S. and Dolganov, V. K. and Kats, E. I.},
    journal = {JETP Lett.},
    volume = {101},
    issue = {7},
    pages = {453},
    year = {2015},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X15070073},
    note = {[Pisma v ZhETF 101, 505 (2015)]}
}