Hilchenbach, M. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Bogdanov, A. T., Klecker, B., Möbius, E., Hilchenbach, M., Popecki, M. A., Kistler, L. M., et al. (2002). Observations of heavy ion charge spectra in CME driven gradual solar energetic particle events. Advances in Space Research, 30(1), 111-117.