Speth, E., Falter, H. D., Franzen, P., Fantz, U., Bandyopadhyay, M., Christ, S., et al. (2006). Overview of the RF source development programme at IPP Garching. Nuclear Fusion, 46, S220-S238. Retrieved from http://www.iop.org/EJ/abstract/0029-5515/46/6/S03.