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\bibitem{PiotrOrleanski_etal2006} Piotr슠Orleanski, Miroslaw슠Ciechanowicz, Malgorzata슠Michalska, Witold슠Nowosielski, Miroslaw슠Rataj, \& Marek슠Winkler. (2006). LCU: the control unit dedicated for local oscillator subsystem in ESA HIFI/Herschel project. In \textit{Proc. SPIE} (Vol. 6159).

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