@article{JETPL.96.646, title = {}, author = {, and , and Morozova, E. N. and , and , }, journal = {JETP Lett.}, volume = {96}, issue = {9}, pages = {577}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_30016.shtml}, note = {[Pisma v ZhETF 96, 646 (2012)]} }