@article{JETPL.98.316, title = {}, author = {Petrov, Yu. V. and Inogamov, N. A.}, journal = {JETP Lett.}, volume = {98}, issue = {5}, pages = {278}, year = {2013}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X13170074}, note = {[Pisma v ZhETF 98, 316 (2013)]} }