@article{JETPL.102.511, title = {}, author = {Aristov, D. N. and , and , }, journal = {JETP Lett.}, volume = {102}, issue = {7}, pages = {455}, year = {2015}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X1519011X}, note = {[Pisma v ZhETF 102, 511 (2015)]} }