Brueckner, G. E., Delaboudinière, J. P., Howard, R. A., Paswaters, S. E., St. Cyr, O. C., Schwenn, R., Lamy, P. L., Simnett, G. M., Thompson, B., & Wang, D. (1998). Geomagnetic storms caused by coronal mass ejections (CMEs): March 1996 through June 1997. Geophysical Research Letters, 25, 3019-3022.