Mandrini, C. H., Driel-Gresztelyi, L. van, Thompson, B., Punkett, S., Démoulin, P. y Aulanier, G. (2000) «Evolution and decay of an active region: Magnetic shear, flare and CME activity», Geofísica Internacional, 39(1), pp. 73–80. doi: 10.22201/igeof.00167169p.2000.39.1.299.