@article{JETPL.106.329, title = {}, author = {, and Valeeva, A. A. and , }, journal = {JETP Lett.}, volume = {106}, issue = {6}, pages = {354}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17180023}, note = {[Pisma v ZhETF 106, 329 (2017)]} }