@article{JETPL.95.23, title = {}, author = {Fedorov, A. S. and , and , and , and , and Ovchinnikov, S. G. and , and Latyshev, A. V.}, journal = {JETP Lett.}, volume = {95}, issue = {1}, pages = {20}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29612.shtml}, note = {[Pisma v ZhETF 95, 23 (2012)]} }