@article{JETPL.107.578, title = {}, author = {Zobov, V. E. and , }, journal = {JETP Lett.}, volume = {107}, issue = {9}, pages = {553}, year = {2018}, doi = {}, url = {http://jetpletters.ru/ps/dx/10.7868/S0370274X18090072}, note = {[Pisma v ZhETF 107, 578 (2018)]} }