@article{JETPL.96.723, title = {}, author = {, and Ovchinnikov, S. G. and Kazak, N. V. and , and , and , and , and , }, journal = {JETP Lett.}, volume = {96}, issue = {10}, pages = {650}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_30030.shtml}, note = {[Pisma v ZhETF 96, 723 (2012)]} }