Klecker, B. Space Plasma Physics of Near-Earth Environment, MPI for Extraterrestrial Physics, Max Planck Society;
Dröge, W., Kartavykh, Y. Y., Klecker, B., & Mason, G. M. (2006). Acceleration and transport modeling of solar energetic particle charge states for the event of 1998 September 9. The Astrophysical Journal, 645(2 Part 1), 1516-1524. doi:10.1086/504515.