@article{JETPL.106.655, title = {}, author = {Kulakovskii, V. D. and , and , }, journal = {JETP Lett.}, volume = {106}, issue = {10}, pages = {686}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17220131}, note = {[Pisma v ZhETF 106, 655 (2017)]} }