@article{JETPL.108.393, title = {}, author = {Smirnov, N. A. and Kudryashov, S. I. and Danilov, P. A. and , and Ionin, A. A. and , }, journal = {JETP Lett.}, volume = {108}, issue = {6}, pages = {368}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X18180054}, note = {[Pisma v ZhETF 108, 393 (2018)]} }