Hirsch, M. W7-X: Physics (PH), Max Planck Institute for Plasma Physics, Max Planck Society;
Hirsch, M., & Holzhauer, E. (2004). Doppler reflectometry with optimised temporal resolution for the measurement of turbulence and its propagation velocity. Plasma Physics and Controlled Fusion, 46, 593-609. doi:10.1088/0741-3335/46/4/002.