@article{JETPL.97.611, title = {}, author = {, and , and , and Eremin, E. V.}, journal = {JETP Lett.}, volume = {97}, issue = {9}, pages = {528}, year = {2013}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X13090075}, note = {[Pisma v ZhETF 97, 611 (2013)]} }