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\bibitem{Yngvesson_etal1999} Yngvesson, K. S., Gerecht, E., Musante, C. F., Zhuang, Y., Ji, M., Goyette, T. M., et al. (1999). Low-noise HEB heterodyne receivers and focal plane arrays for the THz regime using NbN. In R. J. Hwu, \& K. Wu (Eds.), \textit{Proc. SPIE} (Vol. 3795, pp. 357--368). SPIE.

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