@article{JETPL.110.456, title = {}, author = {, and , and , and , and Nadtochenko, V. A.}, journal = {JETP Lett.}, volume = {110}, issue = {7}, pages = {464}, year = {2019}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19190056}, note = {[Pisma v ZhETF 110, 456 (2019)]} }