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\bibitem{Gerecht_etal1998} Gerecht, E., Musante, C. F., Jian, H., Yngvesson, K. S., Dickinson, J., Waldman, J., et al. (1998). Measured results for NbN phonon-cooled hot electron bolometric mixers at 0.6-0.75 THz, 1.56 THz, and 2.5 THz. In \textit{Proc. 9$^{th}$ Int. Symp. Space Terahertz Technol.} (pp. 105--114).

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