@article{JETPL.103.350, title = {}, author = {, and , and Kudryashov, S. I. and Saraeva, I. N. and , and , }, journal = {JETP Lett.}, volume = {103}, issue = {5}, pages = {309}, year = {2016}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X16050040}, note = {[Pisma v ZhETF 103, 350 (2016)]} }