@article{JETPL.99.516, title = {}, author = {Martyushev, L. M. and , }, journal = {JETP Lett.}, volume = {99}, issue = {8}, pages = {446}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14080050}, note = {[Pisma v ZhETF 99, 516 (2014)]} }