@article{JETPL.105.593, title = {}, author = {Pantuev, V. S.}, journal = {JETP Lett.}, volume = {105}, issue = {10}, pages = {631}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17100022}, note = {[Pisma v ZhETF 105, 593 (2017)]} }