@article{JETPL.94.45, title = {}, author = {Zubov, V. E. and Kudakov, A. D. and , and , and , }, journal = {JETP Lett.}, volume = {94}, issue = {1}, pages = {44}, year = {2011}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29428.shtml}, note = {[Pisma v ZhETF 94, 45 (2011)]} }