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\bibitem{Johnson_etal1976} Johnson, M. A., Betz, A. L., McLaren, R. A., Townes, C. H., \& Sutton, E. C. (1976). Nonthermal 10 micron CO$_{2}$ emission lines in the atmospheres of Mars and Venus. \textit{A\&A}, \textit{208}, 145.

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