@article{JETPL.96.413, title = {}, author = {, and Kudryashov, S. I. and , and , and Seleznev, L. V. and , and , }, journal = {JETP Lett.}, volume = {96}, issue = {6}, pages = {375}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29960.shtml}, note = {[Pisma v ZhETF 96, 413 (2012)]} }