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\bibitem{Izadi_etal2018} Izadi, A., Shacker, S. S., Olmo, G. J., \& Banerjee, R. (2018). Observational effects of varying speed of light in quadratic gravity cosmological models. \textit{Int. J. Geom. Methods Mod. Phys.}, \textit{15}(5), 1850084--16pp.

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