@article{JETPL.109.530, title = {}, author = {Vinnikov, L. Ya. and , and Sidelnikov, M. S. and Stolyarov, V. S. and Egorov, S. V. and , and , and , and , }, journal = {JETP Lett.}, volume = {109}, issue = {8}, pages = {521}, year = {2019}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19080071}, note = {[Pisma v ZhETF 109, 530 (2019)]} }