@article{JETPL.103.194, title = {}, author = {Chuev, M. A.}, journal = {JETP Lett.}, volume = {103}, issue = {3}, pages = {175}, year = {2016}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16030073}, note = {[Pisma v ZhETF 103, 194 (2016)]} }