@article{JETPL.108.332, title = {}, author = {Sadovnikov, A. V. and , and , and , and , and , and Nikitov, S. A.}, journal = {JETP Lett.}, volume = {108}, issue = {5}, pages = {312}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X1817006X}, note = {[Pisma v ZhETF 108, 332 (2018)]} }