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CODEX and ESPRESSO are concepts for ultra-stable, high-resolution spectrographs at the E-ELT and VLT, respectively.
L. Pasquini et al: The Messenger 122
1927
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M. Murphy et al: MNRAS 380
2007
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J. Liske et al: MNRAS, in press, arXiv:0802.1532v1 (2008)
2008
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