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\bibitem{Khosropanah_etal2000} Khosropanah, P., Merkel, H., Yngvesson, S., Adam, A., Cherednichenko, S., \& Kollberg, E. (2000). A distributed device model for phonon-cooled HEB mixers predicting IV characteristics, gain, noise and IF bandwidth. In \textit{Proc. 11$^{th}$ Int. Symp. Space Terahertz Technol.} (pp. 474--488). University of Michigan, Ann Arbor, MI USA.

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