@article{JETPL.105.297, title = {}, author = {Frolov, K. V. and , and Lyubutin, I. S. and Chuev, M. A. and , and Bedin, S. A. and Lomov, A. A. and Artemov, V. V. and , }, journal = {JETP Lett.}, volume = {105}, issue = {5}, pages = {319}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17050095}, note = {[Pisma v ZhETF 105, 297 (2017)]} }