McCormick, K., Grigull, P., Baldzuhn, J., Feng, Y., Fiedler, S., Giannone, L., et al. (1999). Core-edge studies with boundary island configurations on the W7-AS stellarator. Plasma Physics and Controlled Fusion, 41(Suppl. 12B), B285-B304. doi:10.1088/0741-3335/41/12B/321.