@article{JETPL.96.576, title = {}, author = {, and , and Dremin, A. A. and Kukushkin, I. V.}, journal = {JETP Lett.}, volume = {96}, issue = {8}, pages = {525}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_30006.shtml}, note = {[Pisma v ZhETF 96, 576 (2012)]} }