TY - JOUR A1 - Marin, D. A1 - Mikhailov, A. V. A1 - Morena, B. A. A1 - Herraiz, M. T1 - Long-term hmF2 trends in the Eurasian longitudinal sector from the ground-based ionosonde observations JO - Ann. Geophys. J1 - ANGEO VL - 19 IS - 7 SP - 761 EP - 772 Y1 - 2001/07/31 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/19/761/2001/ L1 - https://angeo.copernicus.org/articles/19/761/2001/angeo-19-761-2001.pdf DO - 10.5194/angeo-19-761-2001 ER -