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\bibitem{Tong_etal2014} Tong, C. E., Trifonov, A., Blundell, R., Shurakov, A., \& Gol{\textquoteright}tsman, G. (2014). A digital terahertz power meter based on an NbN thin film. In \textit{Proc. 25$^{th}$ Int. Symp. Space Terahertz Technol.} (170).

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