@article{JETPL.96.444, title = {}, author = {Lonchakov, A. T. and , and , and , and , }, journal = {JETP Lett.}, volume = {96}, issue = {6}, pages = {405}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29965.shtml}, note = {[Pisma v ZhETF 96, 444 (2012)]} }