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\bibitem{Wild_etal2005} Wild W, de Graauw T, Baryshev A, Bos A, Gao JR, Gunst A, et al. Terahertz technology for ESPRIT {\textendash} a far-infrared space interferometer. In: Proc. 16$^{th}$ Int. Symp. Space Terahertz Technol. G{\"o}teborg, Sweden; 2005.

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