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\bibitem{Lobanov_etal2011} Lobanov, Y., Tong, E., Blundell, R., Hedden, A., Voronov, B., \& Gol{\textquoteright}tsman, G. (2011). Large-signal frequency response of an HEB mixer: from 300 MHz to terahertz. \textit{IEEE Trans. Appl. Supercond.}, \textit{21}(3), 628--631.

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