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\bibitem{Baubert_etal2003} Baubert, J., Salez, M., Delorme, Y., Pons, P., Goltsman, G., Merkel, H., et al. (2003). Membrane-based HEB mixer for THz applications. In J. - C. Chiao, V. K. Varadan, \& C. Can{\'e} (Eds.), \textit{Proc. SPIE} (Vol. 5116, pp. 551--562). SPIE.

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