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\bibitem{Cherednichenko_etal2004} Cherednichenko, S., Khosropanah, P., Berg, T., Merkel, H., Kollberg, E., Drakinskiy, V., et al. (2004). Optimization of HEB mixer for the Herschel Space Observatory. In \textit{Proc. 15$^{th}$ Int. Symp. Space Terahertz Technol.} (16).

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