@article{JETPL.107.160, title = {}, author = {Silaev, A. A. and Kostin, V. A. and Laryushin, I. D. and Vvedenskii, N. V.}, journal = {JETP Lett.}, volume = {107}, issue = {3}, pages = {151}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X18030037}, note = {[Pisma v ZhETF 107, 160 (2018)]} }