@article{JETPL.93.740, title = {}, author = {, and Shklyaev, A. A. and , and Latyshev, A. V.}, journal = {JETP Lett.}, volume = {93}, issue = {11}, pages = {661}, year = {2011}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29317.shtml}, note = {[Pisma v ZhETF 93, 740 (2011)]} }