@article{JETPL.95.379, title = {}, author = {Derbin, A. V. and Drachnev, I. S. and , and Muratova, V. N.}, journal = {JETP Lett.}, volume = {95}, issue = {7}, pages = {339}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29670.shtml}, note = {[Pisma v ZhETF 95, 379 (2012)]} }