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\bibitem{Pineda_etal2013} Pineda, J. L., Langer, W. D., Velusamy, T., \& Goldsmith, P. F. (2013). A Herschel [C~ii] Galactic plane survey. I. The global distribution of ISM gas components. \textit{Astron. Astrophys.}, \textit{554}, A103.

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