@article{JETPL.105.270, title = {}, author = {Andryushechkin, B. V. and , and Pavlova, T. V. and , and Eltsov, K. N.}, journal = {JETP Lett.}, volume = {105}, issue = {5}, pages = {292}, year = {2017}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X17050046}, note = {[Pisma v ZhETF 105, 270 (2017)]} }