TY - JOUR A1 - Pulkkinen, A. A1 - Engels, M. T1 - The role of 3-D geomagnetic induction in the determination of the ionospheric currents from the ground geomagnetic data JO - Ann. Geophys. J1 - ANGEO VL - 23 IS - 3 SP - 909 EP - 917 Y1 - 2005/03/30 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/23/909/2005/ L1 - https://angeo.copernicus.org/articles/23/909/2005/angeo-23-909-2005.pdf DO - 10.5194/angeo-23-909-2005 ER -