@article{JETPL.108.62, title = {}, author = {Zhukov, A. A. and , and , and , and , }, journal = {JETP Lett.}, volume = {108}, issue = {1}, pages = {63}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/0/article_32838.shtml}, note = {[Pisma v ZhETF 108, 62 (2018)]} }