@article{JETPL.99.478, title = {}, author = {, and Entin, M. V.}, journal = {JETP Lett.}, volume = {99}, issue = {7}, pages = {410}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X1407011X}, note = {[Pisma v ZhETF 99, 478 (2014)]} }