@article{JETPL.96.218, title = {}, author = {, and Kolesnikov, S. V. and , and Saletsky, A. M.}, journal = {JETP Lett.}, volume = {96}, issue = {3}, pages = {204}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29878.shtml}, note = {[Pisma v ZhETF 96, 218 (2012)]} }