@article{JETPL.108.35, title = {}, author = {Martyushev, L. M. and , and , }, journal = {JETP Lett.}, volume = {108}, issue = {1}, pages = {44}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X18130076}, note = {[Pisma v ZhETF 108, 35 (2018)]} }