@article{JETPL.104.342,
    title = {},
    author = {Khanin, Yu. N. and Vdovin, E. E. and ,  and ,  and ,  and ,  and Novoselov, K. S.},
    journal = {JETP Lett.},
    volume = {104},
    issue = {5},
    pages = {334},
    year = {2016},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16170100},
    note = {[Pisma v ZhETF 104, 342 (2016)]}
}