@article{JETPL.97.226, title = {}, author = {Nazmitdinov, R. G. and , }, journal = {JETP Lett.}, volume = {97}, issue = {4}, pages = {199}, year = {2013}, doi = {}, url = {http://jetpletters.ru/ps/0/article_30184.shtml}, note = {[Pisma v ZhETF 97, 226 (2013)]} }