seed population

Agapitov, O., Artemyev, A., Mourenas, D., Mozer, F., & Krasnoselskikh, V. (2015). Nonlinear local parallel acceleration of electrons through Landau trapping by oblique whistler mode waves in the outer radiation belt. Geophysical Research Letters, 42, 140-10. http://doi.org/10.1002/2015GL066887 (Original work published December 2015)
Boyd, A. J., Spence, H. E., Huang, C. -L., Reeves, G., Baker, D., Turner, D. L., et al. (2016). Statistical Properties of the Radiation Belt Seed Population. Journal Of Geophysical Research: Space Physics. http://doi.org/10.1002/2016JA022652 (Original work published July 2016)
Allison, H., Horne, R., Glauert, S., & Del Zanna, G. (2018). Determination of the Equatorial Electron Differential Flux From Observations at Low Earth Orbit. Journal Of Geophysical Research: Space Physics. http://doi.org/10.1029/2018JA025786 (Original work published November 2018)