@article{JETPL.99.54, title = {}, author = {, and Zayarny, D. A. and , and Kudryashov, S. I. and , and , }, journal = {JETP Lett.}, volume = {99}, issue = {1}, pages = {51}, year = {2014}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X14010111}, note = {[Pisma v ZhETF 99, 54 (2014)]} }