oxygen

Valek, P., Goldstein, J., Jahn, J. -M., McComas, D., & Spence, H. (2015). First joint in situ and global observations of the medium-energy oxygen and hydrogen in the inner magnetosphere. Journal Of Geophysical Research: Space Physics, 120, 7615-7628. http://doi.org/10.1002/2015JA021151 (Original work published September 2015)

Usanova, M., Malaspina, D., Jaynes, A., Bruder, R., Mann, I., Wygant, J., & Ergun, R. (2016). Van Allen Probes observations of oxygen cyclotron harmonic waves in the inner magnetosphere. Geophysical Research Letters, 43, 8827-8834. http://doi.org/10.1002/grl.v43.1710.1002/2016GL070233 (Original work published September 2016)

Kistler, L. M., Mouikis, C., Spence, H. E., Menz, A. M., Skoug, R. M., Funsten, H. O., et al. (2016). The Source of O ⁺ in the Storm-time Ring Current. Journal Of Geophysical Research: Space Physics. http://doi.org/10.1002/2015JA022204 (Original work published May 2016)