@article{JETPL.104.342, title = {}, author = {Khanin, Yu. N. and Vdovin, E. E. and , and , and , and , and , }, journal = {JETP Lett.}, volume = {104}, issue = {5}, pages = {334}, year = {2016}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16170100}, note = {[Pisma v ZhETF 104, 342 (2016)]} }