Erckmann, V., Kasparek, W., Gantenbein, G., Hollmann, F., Jonitz, L., Noke, F., et al. (2009). ECRH for W7-X: Transmission losses of high-power 140 GHz wave beams. Fusion Science and Technology, 55(1), 16-22. doi:10.13182/FST09-A4049.