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\bibitem{Semenov_etal1996} Semenov, A. D., Gousev, Y. P., Nebosis, R. S., Renk, K. F., Yagoubov, P., Voronov, B. M., et al. (1996). Heterodyne detection of THz radiation with a superconducting hot-electron bolometer mixer. \textit{Appl. Phys. Lett.}, \textit{69}(2), 260--262.

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