Andre, D., and W. Baumjohann. “Joint Two-Dimensional Observations of Ground Magnetic and Ionospheric Electric Fields Associated With Auroral Currents. 5. Current System Associated With Eastward Drifting Omega Bands”. Journal of Geophysics 50, no. 1 (October 22, 1981): 194-201. Accessed October 9, 2025. https://journal.geophysicsjournal.com/JofG/article/view/201.