@article{JETPL.93.699, title = {}, author = {Kouzakov, K. A. and Studenikin, A. I. and , }, journal = {JETP Lett.}, volume = {93}, issue = {11}, pages = {623}, year = {2011}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29309.shtml}, note = {[Pisma v ZhETF 93, 699 (2011)]} }