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Comité Consultatif pour la Définition du Mètre,
9th meeting
(1997), 1999, 163 pp.
[fr:  ;
en: ]
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Advice from the CCL on the use of unstabilized lasers as standards of wavelength: the helium-neon laser at 633 nm, Metrologia, 2009, 46 11-19.
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Mise en pratique for the definition of the metre: CIPM list of recommended radiations (2005 update).
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CCL summary
