@article{JETPL.98.665, title = {}, author = {Naumenko, G. A. and Potylitsyn, A. P. and Shevelev, M. V. and , and Bleko, V. V.}, journal = {JETP Lett.}, volume = {98}, issue = {10}, pages = {593}, year = {2013}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X13220037}, note = {[Pisma v ZhETF 98, 665 (2013)]} }