@article{JETPL.100.708, title = {}, author = {Rut?kov, E. V. and Gall, N. R.}, journal = {JETP Lett.}, volume = {100}, issue = {10}, pages = {625}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14220056}, note = {[Pisma v ZhETF 100, 708 (2014)]} }