@article{JETPL.99.99, title = {}, author = {, and Pavlov, V. N.}, journal = {JETP Lett.}, volume = {99}, issue = {2}, pages = {93}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14020076}, note = {[Pisma v ZhETF 99, 99 (2014)]} }