1. Observational evidence from supernovae for an accelerating universe and a cosmological constant;Riess;Astron. J.,1998
2. Measurements of omega and lambda from 42 high-redshift supernovae;Perlmutter;Astrophys. J.,1999
3. A very non-exhaustive list of references is the following: E. Witten, Quantum gravity in de Sitter space, in: Conference Proceedings for “International School of Subnuclear Physics”, 39th Course: “New Fields and Strings in Subnuclear Physics”, Erice, Italy, September 2001, arXiv:hep-th/0106109.
4. On the consistency of de Sitter vacua;Danielsson;J. High Energy Phys.,2002
5. Recurrent nightmares?: measurement theory in de Sitter space;Banks;J. High Energy Phys.,2002