Burhenn, R., Baldzuhn, J., Biel, W., Dreier, H., Endler, M., Jimenez-Gomez, R., et al. (2011). Diagnostics Development for Steady State Operation of the Stellarator Wendelstein 7-X. Contributions to Plasma Physics, 51(2-3), 271-278. doi:10.1002/ctpp.201000053.