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\bibitem{Antipov_etal2001} Antipov, S. V., Svechnikov, S. I., Smirnov, K. V., Vakhtomin, Y. B., Finkel, M. I., Goltsman, G. N., et al. (2001). Noise temperature of quasioptical NbN hot electron bolometer mixers at 900 GHz. \textit{Physics of Vibrations}, \textit{9}(4), 242--245.

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