@article{JETPL.100.712, title = {}, author = {, and , and , and Gusev, A. I.}, journal = {JETP Lett.}, volume = {100}, issue = {10}, pages = {629}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14220068}, note = {[Pisma v ZhETF 100, 712 (2014)]} }