@article{JETPL.98.587, title = {}, author = {, and Novikov, V. A. and Vysotsky, M. I.}, journal = {JETP Lett.}, volume = {98}, issue = {9}, pages = {519}, year = {2013}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X13210017}, note = {[Pisma v ZhETF 98, 587 (2013)]} }