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\bibitem{Kawamura_etal2000} Kawamura, J., Blundell, R., Tong, C. - Y. E., Papa, D. C., Hunter, T. R., Paine, S. N., et al. (2000). Superconductive hot-electron-bolometer mixer receiver for 800-GHz operation. \textit{IEEE Trans. Microw. Theory Techn.}, \textit{48}(4), 683--689.

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