1. Helicons-the past decade
2. 3F.R. Chang-Díaz, "An Overview of the VASIMR Engine: High Power Space Propulsion with RF Plasma Generation and Heating," Radio Frequency Power in Plasmas, 14thTopical Conference, Oxnard, CA, AIP Conference Proceedings, Vol.595, 2001,pp.3
3. 4C. Charles, "Helicon Double-Layer Thrusters," Proc. 27th Int. Conf. on Plasmas and Ionized Gases, Eindhoven, July2005, Topical 5
4. Very efficient plasma generation by whistler waves near the lower hybrid frequency