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\bibitem{Folgado_etal2018} Folgado, M. G., Gomez-Vargas, G. A., Rius, N., \& Ruiz de Austri, R. (2018). Probing the sterile neutrino portal to Dark Matter with gamma rays. \textit{J. Cosmol. Astropart. Phys.}, \textit{08}(8), 002--20pp.

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