@article{JETPL.100.935, title = {}, author = {, and , and , and Chapovsky, P. L.}, journal = {JETP Lett.}, volume = {100}, issue = {12}, pages = {829}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X1424014X}, note = {[Pisma v ZhETF 100, 935 (2014)]} }