@article{JETPL.105.230, title = {}, author = {Kvashnin, D. G. and Chernozatonskii, L. A.}, journal = {JETP Lett.}, volume = {105}, issue = {4}, pages = {250}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17040099}, note = {[Pisma v ZhETF 105, 230 (2017)]} }