@article{JETPL.109.124, title = {}, author = {Rodionov, D. A. and Zagorodnev, I. V.}, journal = {JETP Lett.}, volume = {109}, issue = {2}, pages = {126}, year = {2019}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19020115}, note = {[Pisma v ZhETF 109, 124 (2019)]} }