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\bibitem{Kawamura_etal1996} Kawamura, J., Blundell, R., Tong, C. - Y. E., Golts{\textquoteright}man, G., Gershenzon, E., \& Voronov B. (1996). Superconductive NbN hot-electron bolometric mixer performance at 250 GHz. In \textit{Proc. 7$^{th}$ Int. Symp. Space Terahertz Technol.} (pp. 331--336).

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