@article{JETPL.110.62, title = {}, author = {, and , and , and Bakarov, A. K. and , }, journal = {JETP Lett.}, volume = {110}, issue = {1}, pages = {68}, year = {2019}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19130101}, note = {[Pisma v ZhETF 110, 62 (2019)]} }