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\bibitem{Lobanov_etal2011} Lobanov Y, Tong E, Blundell R, Hedden A, Voronov B, Gol{\textquoteright}tsman G. Large-signal frequency response of an HEB mixer: from 300 MHz to terahertz. IEEE Trans. Appl. Supercond.. 2011;21(3):628--31.

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