@article{JETPL.96.783, title = {}, author = {, and Kuznetsov, E. A. and , }, journal = {JETP Lett.}, volume = {96}, issue = {11}, pages = {699}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_30092.shtml}, note = {[Pisma v ZhETF 96, 783 (2012)]} }