Bratman, V. L., Denisov, G. G., Savilov, A. V., Bongers, W. A., van der Geer, C. A. J., Manintveld, P., … Urbanus, W. H. (2000). Spurious excitation of near-cutoff modes in free-electron masers. Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment, 445, 1-6. https://doi.org/10.1016/s0168-9002(00)00103-0 (Original work published 2000)
DIFFER