Renner, H., Boscary, J., Erckmann, V., Greuner, H., Grote, H., Sapper, J., et al. (2000). The Capabilities of Steady State Operation at the Stellarator W7-X with Emphasis on Divertor Design. Nuclear Fusion, 40, 1083-1093. Retrieved from http://dx.doi.org/10.1088/0029-5515/40/6/306.