@article{JETPL.96.107, title = {}, author = {Koplak, O. V. and Morgunov, R. B. and , }, journal = {JETP Lett.}, volume = {96}, issue = {2}, pages = {102}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29840.shtml}, note = {[Pisma v ZhETF 96, 107 (2012)]} }