Axford, W. I. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Krymskii, A. M., Breus, T. K., & Axford, W. I. (1999). Sources of heavy ions in the Venusian magnetosheath and their role in solar wind loading processes. Cosmic Research, 37(4), 360-368.