@article{JETPL.101.403,
    title = {},
    author = {Popov, Z. I. and Litasov, K. D. and Gavryushkin, P. N. and Ovchinnikov, S. G. and Fedorov, A. S.},
    journal = {JETP Lett.},
    volume = {101},
    issue = {6},
    pages = {371},
    year = {2015},
    doi = {},
    url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X15060028},
    note = {[Pisma v ZhETF 101, 403 (2015)]}
}