核宇宙年代学
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ESO Press Release 02/01: "First Reading of a Basic Cosmic Chronometer with UVES and the VLT." (Accessed 3/8/06)
Hill et al., "First Stars. I. The extreme r-element rich, iron-poor halo giant CS 31082-001" Astronomy & Astrophysics, 387, (2002) 560-579. (Accessed 3/8/06)