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\bibitem{Maddison_etal1998} Maddison, B. J., Martin, R. J., Oldfield, M. L., Mann, C. M., Matheson, D. N., Ellison, B. N., et al. (1998). A compact 500 GHz planar schottky siode receiver with a wide instantaneous bandwidth. In \textit{Proc. 9$^{th}$ Int. Symp. Space Terahertz Technol.} (367).

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