Beidler, C., Brakel, R., Burhenn, R., Dinklage, A., Erckmann, V., Feng, Y., et al. (2012). Helical Confinement Concepts. In M. Kikuchi, K. Lackner, & M. Q. Tran (Eds.), Fusion Physics (pp. 847-957). Vienna: International Atomic Energy Agency.