@article{JETPL.98.228, title = {}, author = {Saiko, A. P. and Fedaruk, R. and Markevich, S. A.}, journal = {JETP Lett.}, volume = {98}, issue = {4}, pages = {201}, year = {2013}, doi = {}, url = {http://jetpletters.ru/ps/0/article_30394.shtml}, note = {[Pisma v ZhETF 98, 228 (2013)]} }