Dammertz, G., Alberti, S., Arnold, A., Brand, P., Braune, H., Borie, E., et al. (2004). Progress in the Development of 1 MW CW Gyrotrons for the Stellarator W7-X. Talk presented at 13th Joint Workshop on Electron Cyclotron Emission and Electron Cyclotron Resonance Heating (EC-13). Nizhny Novgorod. 2004-05-17 - 2004-05-20.