@article{JETPL.101.34, title = {}, author = {Egorov, S. V. and , and , and Uspenskaya, L. S.}, journal = {JETP Lett.}, volume = {101}, issue = {1}, pages = {32}, year = {2015}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X15010075}, note = {[Pisma v ZhETF 101, 34 (2015)]} }