Dark energy constraints from the cosmic age and supernova

@article{Feng2005DarkEC,
  title={Dark energy constraints from the cosmic age and supernova},
  author={Bo Feng and Xiulian Wang and Xinmin Zhang},
  journal={Physics Letters B},
  year={2005},
  volume={607},
  pages={35-41}
}
Age constraints on the cosmic equation of state
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TLDR
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