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\bibitem{Baryshev_etal2009} Baryshev, A. M., Wild, W., Likhachev, S. F., Vdovin, V. F., Goltsman, G. N., \& Kardashev, N. S. (2009). Main parameters and instrumentation of Millimetron space mission. In \textit{Proc. 20$^{th}$ Int. Symp. Space Terahertz Technol.} (108).

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