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WikiPedia: HD_140283 http://www.futura-sciences.com/fr/news/t/astronomi... http://www.nature.com/news/nearby-star-is-almost-a... http://rt.com/news/oldest-star-universe-discovery-... http://www.space.com/20112-oldest-known-star-unive... http://www.universetoday.com/100147/nearby-ancient... http://www.ari.uni-heidelberg.de/datenbanken/aricn... http://adsabs.harvard.edu/abs/1951ApJ...114...52C http://adsabs.harvard.edu/abs/1989AJ.....98.1049G http://adsabs.harvard.edu/abs/2007A&A...474..653V http://adsabs.harvard.edu/abs/2010A&A...523A..24G