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2. The cosmological constant problem
3. P. A. R. Ade et al. (Planck), “Planck 2015 results. XIII. Cosmological parameters,” Astron. Astrophys. 594, A13 (2016), arXiv:1502.01589 [astro-ph.CO].
4. ACCELERATING UNIVERSES WITH SCALING DARK MATTER
5. Exploring the Expansion History of the Universe