@article{JETPL.110.602, title = {}, author = {, and Danilov, I. V. and Kondrin, M. V. and Brazhkin, V. V.}, journal = {JETP Lett.}, volume = {110}, issue = {9}, pages = {603}, year = {2019}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X19210069}, note = {[Pisma v ZhETF 110, 602 (2019)]} }