Keppler, E. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
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Lim, T. L., Quenby, J. J., Reuss, M. K., Keppler, E., Kunow, H., Heber, B., et al. (1996). ULYSSES observations of energetic particle acceleration and the superposed CME and CIR events of November 1992. Annales Geophysicae, 14(4), 400-410.