D. J. Madera, R. A. Marshall, S. Elschot, S. Kaeppler, P. Reyes, R. H. Varney, and A. B. Crew. Time-Dependent Inversion of Energetic Electron Precipitation Spectra From Ground-Based Incoherent Scatter Radar Measurements. Journal of Geophysical Research: Space Physics, volume 128, issue 5,  2023 .

Q. Ma, W. Xu, E. R. Sanchez, R. A. Marshall, J. Bortnik, P. M. Reyes, R. H. Varney, S. R. Kaeppler, Y. Miyoshi, A. Matsuoka, Y. Kasahara, S. Matsuda, F. Tsuchiya, A. Kumamoto, S. Kasahara, S. Yokota, K. Keika, T. Hori, T. Mitani, S. Nakamura, Y. Kazama, S.-Y. Wang, C.-W. Jun, I. Shinohara, and S. W.-Y. Tam. Analysis of Electron Precipitation and Ionospheric Density Enhancements Due To Hiss Using Incoherent Scatter Radar and Arase Observations. Journal of Geophysical Research: Space Physics, volume 127, issue 8,  2022 .

E. R. Sanchez, Q. Ma, W. Xu, R. A. Marshall, J. Bortnik, P. Reyes, R. Varney, and S. Kaeppler. A Test of Energetic Particle Precipitation Models Using Simultaneous Incoherent Scatter Radar and Van Allen Probes Observations. Journal of Geophysical Research: Space Physics, volume 127, issue 8,  2022 .

S. R. Kaeppler, E. Sanchez, R. H. Varney, R. J. Irvin, R. A. Marshall, J. Bortnik, A. S. Reimer, and P. M. Reyes. Chapter 6 - Incoherent scatter radar observations of 10–100keV precipitation: review and outlook. The Dynamic Loss of Earth's Radiation Belts, Elsevier,  2020 .

D. Janches, N. Swarnalingam, J. D. Carrillo-Sanchez, J. C. Gomez-Martin, R. Marshall, D. Nesvorny, J. M. C. Plane, W. Feng, and P. Pokorny. Radar Detectability Studies of Slow and Small Zodiacal Dust Cloud Particles. III. The Role of Sodium and the Head Echo Size on the Probability of Detection. The Astrophysical Journal, volume 843, issue 1,  2017 .

C. Goenka, J. Semeter, J. Noto, J. Baumgardner, J. Riccobono, M. Migliozzi, H. Dahlgren, R. Marshall, S. Kapali, M. Hirsch, D. Hampton, and H. Akbari. LiCHI - Liquid Crystal Hyperspectral Imager for simultaneous multispectral imaging in aeronomy. Opt. Express, volume 23, pages 17772-17782,  2015 .