Hartfuss, H., Endler, M., Erckmann, V., Gasparino, U., Giannone, L., Grigull, P., et al. (1994). Physics studies in W7-AS. Plasma Physics and Controlled Fusion, 36(12B Suppl. S), B17-B37. doi:10.1088/0741-3335/36/12B/002.