@article{JETPL.110.222, title = {}, author = {Vorobyev, A. S. and Gagarski, A. M. and Shcherbakov, O. A. and Vaishnene, L. A. and Barabanov, A. L.}, journal = {JETP Lett.}, volume = {110}, issue = {4}, pages = {242}, year = {2019}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19160021}, note = {[Pisma v ZhETF 110, 222 (2019)]} }