@article{JETPL.97.597, title = {}, author = {Braguta, V. V. and , and , and , and , }, journal = {JETP Lett.}, volume = {97}, issue = {9}, pages = {517}, year = {2013}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X13090038}, note = {[Pisma v ZhETF 97, 597 (2013)]} }