Oepts, D., van der Meer, A. F. G., Best, R. W. B., van Amersfoort, P. W., & Colson, W. B. (1989). Simulations of Mode Reduction with an Intracavity Etalon in an Rf-Linac Based Fel. Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment, 285, 204-210. https://doi.org/10.1016/0168-9002(89)90451-8 (Original work published)
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