@article{JETPL.95.48, title = {}, author = {Trubilko, A. I.}, journal = {JETP Lett.}, volume = {95}, issue = {1}, pages = {44}, year = {2012}, doi = {}, url = {http://jetpletters.ru/ps/0/article_29617.shtml}, note = {[Pisma v ZhETF 95, 48 (2012)]} }