TY - JOUR A1 - Osepian, A. A1 - Kirkwood, S. A1 - Dalin, P. A1 - Tereschenko, V. T1 - D-region electron density and effective recombination coefficients during twilight – experimental data and modelling during solar proton events JO - Ann. Geophys. J1 - ANGEO VL - 27 IS - 10 SP - 3713 EP - 3724 Y1 - 2009/10/02 PB - Copernicus Publications SN - 1432-0576 UR - https://angeo.copernicus.org/articles/27/3713/2009/ L1 - https://angeo.copernicus.org/articles/27/3713/2009/angeo-27-3713-2009.pdf DO - 10.5194/angeo-27-3713-2009 ER -