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\bibitem{Shcherbatenko_etal2014} Shcherbatenko, M., Lobanov, Y., Finkel, M., Maslennikov, S., Pentin, I., Semenov, A., et al. (2014). Development of a 30 THz heterodyne receiver based on a hot-electron-bolometer mixer. In \textit{Proc. 25$^{th}$ Int. Symp. Space Terahertz Technol.} (122).

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