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\bibitem{Floet_etal1998} Floet, D. W., Baselmans, J. J. A., Klapwijk, T. M., \& Gao, J. R. (1998). Resistive transition of niobium superconducting hot-electron bolometer mixers. \textit{Appl. Phys. Lett.}, \textit{73}(19), 2826.

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