@article{JETPL.104.192, title = {}, author = {, and Podlivaev, A. I.}, journal = {JETP Lett.}, volume = {104}, issue = {3}, pages = {193}, year = {2016}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16150108}, note = {[Pisma v ZhETF 104, 192 (2016)]} }