@article{JETPL.94.289, title = {}, author = {, and Kudryashov, S. I. and , and , and Seleznev, L. V. and , }, journal = {JETP Lett.}, volume = {94}, issue = {4}, pages = {266}, year = {2011}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29488.shtml}, note = {[Pisma v ZhETF 94, 289 (2011)]} }