@article{JETPL.93.144, title = {}, author = {, and , and , and Saletsky, A. M.}, journal = {JETP Lett.}, volume = {93}, issue = {3}, pages = {129}, year = {2011}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29143.shtml}, note = {[Pisma v ZhETF 93, 144 (2011)]} }