Witasse, O., Sanchez-Cano, B., Mays, M. L., Kajdic, P., Opgenoorth, H., Elliott, H. A., et al. (2017). Interplanetary coronal mass ejection observed at STEREO-A, Mars, comet 67P/Churyumov-Gerasimenko, Saturn, and New Horizons en route to Pluto: Comparison of its Forbush decreases at 1.4, 3.1, and 9.9 AU. Journal Geophysical Research, 122(8), 7865-7890. doi:10.1002/2017JA023884.