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\bibitem{Kawamura_etal2002} Kawamura, J., Hunter, T. R., Tong, C. Y. E., Blundell, R., Papa, D. C., Patt, F., et al. (2002). Ground-based terahertz CO spectroscopy towards Orion. \textit{A\&A}, \textit{394}(1), 271--274.

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