@article{JETPL.105.236, title = {}, author = {Maslova, N. S. and Mantsevich, V. N. and , }, journal = {JETP Lett.}, volume = {105}, issue = {4}, pages = {260}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17040117}, note = {[Pisma v ZhETF 105, 236 (2017)]} }