@article{JETPL.98.886, title = {}, author = {Demura, A. V. and , and Lisitsa, V. S. and , }, journal = {JETP Lett.}, volume = {98}, issue = {12}, pages = {786}, year = {2013}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X13240053}, note = {[Pisma v ZhETF 98, 886 (2013)]} }