@article{JETPL.105.347, title = {}, author = {Sadovnikov, A. V. and , and , and , and , and , and Nikitov, S. A.}, journal = {JETP Lett.}, volume = {105}, issue = {6}, pages = {364}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17060042}, note = {[Pisma v ZhETF 105, 347 (2017)]} }