@article{JETPL.108.568, title = {}, author = {Korotin, M. A. and , and , and , and , and , and , and , }, journal = {JETP Lett.}, volume = {108}, issue = {8}, pages = {537}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.1134/S0370274X18200092}, note = {[Pisma v ZhETF 108, 568 (2018)]} }