@article{JETPL.105.28, title = {}, author = {Lyubutin, I. S. and Starchikov, S. S. and , and , and , and , and , and , }, journal = {JETP Lett.}, volume = {105}, issue = {1}, pages = {26}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17010064}, note = {[Pisma v ZhETF 105, 28 (2017)]} }