@article{JETPL.100.732, title = {}, author = {Gusikhin, P. A. and Muravev, V. M. and Kukushkin, I. V.}, journal = {JETP Lett.}, volume = {100}, issue = {10}, pages = {648}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X1422010X}, note = {[Pisma v ZhETF 100, 732 (2014)]} }