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\bibitem{Lopez-Honorez_etal2013} Lopez-Honorez, L., Mena, O., Palomares-Ruiz, S., \& Vincent, A. C. (2013). Constraints on dark matter annihilation from CMB observations before Planck. \textit{J. Cosmol. Astropart. Phys.}, \textit{07}(7), 046--26pp.

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