@article{JETPL.103.128, title = {}, author = {Altukhov, I. V. and , and Kagan, M. S. and Paprotskiy, S. K. and Khvalkovskiy, N. A. and , and Vasiliev, A. P. and Zadiranov, Yu. M. and , and , and , }, journal = {JETP Lett.}, volume = {103}, issue = {2}, pages = {122}, year = {2016}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16020090}, note = {[Pisma v ZhETF 103, 128 (2016)]} }