Wilken, B. MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
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Williams, D. J., Mauk, B. H., McEntire, R. E., Roelof, E. C., Armstrong, T. P., Wilken, B., et al. (1996). Electron beams and ion composition measured at Io and in its torus. Science, 274, 401-403.