Fluctuations in the Total Electron Content and Errors in GPS Positioning Caused by Polar Auroras during the Auroral Disturbance of September 27, 2019. - Shagimuratov, I. I.; Filatov, M. V.; Efishov, I. I.; Zakharenkova, I. E.; Tepenitsyna, N. Yu. (Bulletin of the Russian Academy of Sciences: Physics, 2021)