TY - JOUR A1 - Ivchenko, N. A1 - Marklund, G. T1 - Observation of low frequency electromagnetic activity at 1000 km altitude JO - Ann. Geophys. J1 - ANGEO VL - 19 IS - 6 SP - 643 EP - 648 Y1 - 2001/06/30 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/19/643/2001/ L1 - https://angeo.copernicus.org/articles/19/643/2001/angeo-19-643-2001.pdf DO - 10.5194/angeo-19-643-2001 ER -