@article{JETPL.108.774, title = {}, author = {Kirpichenkov, V. Ya. and Kirpichenkova, N. V. and Lozin, O. I. and , }, journal = {JETP Lett.}, volume = {108}, issue = {11}, pages = {759}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X18230078}, note = {[Pisma v ZhETF 108, 774 (2018)]} }