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\bibitem{Ryabchun_etal2007} Ryabchun, S., Tong, C. - Y. E., Blundell, R., Kimberk, R., \& Gol{\textquoteright}tsman, G. (2007). Study of the effect of microwave radiation on the operation of HEB mixers in the terahertz frequency range. \textit{IEEE Trans. Appl. Supercond.}, \textit{17}(2), 391--394.

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