@article{JETPL.97.561, title = {}, author = {Brazhkin, V. V. and Tsiok, O. B. and , }, journal = {JETP Lett.}, volume = {97}, issue = {8}, pages = {490}, year = {2013}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X13080110}, note = {[Pisma v ZhETF 97, 561 (2013)]} }