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\bibitem{Betz_etal1976} Betz, A. L., Johnson, M. A., McLaren, R. A., \& Sutton, E. C. (1976). Heterodyne detection of CO$_{2}$ emission lines and wind velocities in the atmosphere of Venus. \textit{Astrophys. J.}, \textit{208}, L141--L144.

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