@article{JETPL.94.816, title = {}, author = {Ionin, A. A. and Kudryashov, S. I. and Seleznev, L. V. and , }, journal = {JETP Lett.}, volume = {94}, issue = {10}, pages = {753}, year = {2011}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29586.shtml}, note = {[Pisma v ZhETF 94, 816 (2011)]} }