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\bibitem{Tretyakov_etal2011} Tretyakov, I., Ryabchun, S., Finkel, M., Maslennikova, A., Kaurova, N., Lobastova, A., et al. (2011). Low noise and wide bandwidth of NbN hot-electron bolometer mixers. \textit{Appl. Phys. Lett.}, \textit{98}, 033507 (1 to 3).

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