@article{JETPL.94.325, title = {}, author = {Iskhakov, R. S. and Stolyar, S. V. and , and , }, journal = {JETP Lett.}, volume = {94}, issue = {4}, pages = {301}, year = {2011}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29494.shtml}, note = {[Pisma v ZhETF 94, 325 (2011)]} }