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Magnetic Helicity and Energetics in Solar Active Regions: Can we calculate them – why do we need them? Manolis K. Georgoulis JHU/APL Whistler, CA, 08/01/07.
Forecasting the Solar Drivers of Severe Space Weather from Active-Region Magnetograms and Recent Flare Activity David A. Falconer (UAHuntsville/MSFC),
