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\bibitem{AlbertBetz_etal2003} Albert Betz, Rita Boreiko, Yongdong Zhou, Jun Jhao, Yusuf Selamet, Yong Chang, et al. (2003). HgCdTe photoconductive mixers for 3-15 terahertz. In \textit{Proc. 14$^{th}$ Int. Symp. Space Terahertz Technol.} (pp. 102--111). Tucson, USA.

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