@article{JETPL.109.360, title = {}, author = {Chukalina, E. P. and , and , and , and Popova, M. N.}, journal = {JETP Lett.}, volume = {109}, issue = {6}, pages = {352}, year = {2019}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X1906002X}, note = {[Pisma v ZhETF 109, 360 (2019)]} }