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\bibitem{Billade_etal2009} Billade, B., Belitsky, V., Pavolotsky, A., Lapkin, I., \& Kooi, J. (2009). ALMA band 5 (163-211 GHz) sideband separation mixer. In \textit{Proc. 20$^{th}$ Int. Symp. Space Terahertz Technol.} (pp. 19--23).

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