@article{JETPL.100.639, title = {}, author = {Magarill, L. I. and , }, journal = {JETP Lett.}, volume = {100}, issue = {9}, pages = {561}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X1421005X}, note = {[Pisma v ZhETF 100, 639 (2014)]} }