TY - JOUR A1 - Mikhailov, A. V. A1 - de la Morena, B. A. T1 - Long-term trends of foE and geomagnetic activity variations JO - Ann. Geophys. J1 - ANGEO VL - 21 IS - 3 SP - 751 EP - 760 Y1 - 2003/03/31 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/21/751/2003/ L1 - https://angeo.copernicus.org/articles/21/751/2003/angeo-21-751-2003.pdf DO - 10.5194/angeo-21-751-2003 ER -