@article{JETPL.106.201, title = {}, author = {Muzychenko, D. A. and Oreshkin, A. I. and Oreshkin, S. I. and , and Putilov, A. V. and , }, journal = {JETP Lett.}, volume = {106}, issue = {4}, pages = {217}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17160032}, note = {[Pisma v ZhETF 106, 201 (2017)]} }