Mauk, B. H., McEntire, R. W., Williams, D. J., Lagg, A., Roelof, E. C., Krimigis, S. M., Armstrong, T. P., Fritz, T. A., Lanzerotti, L. J., Roederer, J. G., & Wilken, B. (1998). Galileo-measured depletion of near-Io hot ring current plasmas since the voyager epoch. Journal Geophysical Research, 103, 4715-4722.