@article{JETPL.107.252, title = {}, author = {Gavriliuk, A. G. and Struzhkin, V. V. and Mironovich, A. A. and Lyubutin, I. S. and Troyan, I. A. and , and , }, journal = {JETP Lett.}, volume = {107}, issue = {4}, pages = {247}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X18040094}, note = {[Pisma v ZhETF 107, 252 (2018)]} }