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\bibitem{Gerecht_etal1997} Gerecht, E., Musante, C. F., Wang, Z., Yngvesson, K. S., Waldman, J., Gol{\textquoteright}tsman, G. N., et al. (1997). NbN hot electron bolometric mixer for 2.5 THz: the phonon cooled version. In \textit{Proc. 8$^{th}$ Int. Symp. Space Terahertz Technol.} (pp. 258--271).

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