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\bibitem{Amato_etal2003} Amato, M. J., Benford, D. J., Moseley, H. S., \& Juan Roman. (2003). An engineering concept and enabling technologies for a large single aperture far-infrared observatory (SAFIR). In \textit{Proc. SPIE} (Vol. 4850, pp. 1120--1131).

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