Finken, K., Koch, R., Euringer, H., van Wassenhove, G., Boedo, J. A., Gray, D. S., … Tammen, H. F. (1994). Resonant Coupling of Ion-Cyclotron Waves to Energetic Helium-Ions. Physical Review Letters, 73, 436-439. https://doi.org/10.1103/PhysRevLett.73.436 (Original work published)
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