@article{JETPL.105.354, title = {}, author = {Nekrasov, I. A. and Pavlov, N. S. and , }, journal = {JETP Lett.}, volume = {105}, issue = {6}, pages = {370}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17060054}, note = {[Pisma v ZhETF 105, 354 (2017)]} }