@article{JETPL.100.570, title = {}, author = {Arseev, P. I. and , and , }, journal = {JETP Lett.}, volume = {100}, issue = {8}, pages = {512}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14200077}, note = {[Pisma v ZhETF 100, 570 (2014)]} }