@article{JETPL.105.723, title = {}, author = {, and , and , and , and , and , and , and Likhovid, N. A. and , and Pantuev, V. S. and , and , and , and , }, journal = {JETP Lett.}, volume = {105}, issue = {12}, pages = {753}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17120013}, note = {[Pisma v ZhETF 105, 723 (2017)]} }