Yue, C., Bortnik, J., Chen, L., Ma, Q., Thorne, R., Reeves, G., & Spence, H. (2016). Transitional behavior of different energy protons based on Van Allen Probes observations. Geophysical Research Letters. http://doi.org/10.1002/2016GL071324 (Original work published December 2016)
Yue, C., Bortnik, J., Chen, L., Ma, Q., Thorne, R., Reeves, G., & Spence, H. (2017). Transitional behavior of different energy protons based on Van Allen Probes observations. Geophysical Research Letters, 44. http://doi.org/10.1002/2016GL071324 (Original work published January 2017)