@article{JETPL.95.751, title = {}, author = {, and , and Levchenko, A. A. and Remizov, I. A. and Filatov, S. V.}, journal = {JETP Lett.}, volume = {95}, issue = {12}, pages = {670}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29771.shtml}, note = {[Pisma v ZhETF 95, 751 (2012)]} }