@article{JETPL.103.711,
    title = {},
    author = {,  and Volovik, G. E.},
    journal = {JETP Lett.},
    volume = {103},
    issue = {10},
    pages = {627},
    year = {2016},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16100040},
    note = {[Pisma v ZhETF 103, 711 (2016)]}
}