TY - JOUR AU - Stone, Jack AU - Decker, Jennifer AU - Gill, Patrick AU - Lewis, Andrew AU - Juncar, Patrick AU - Rovera, Daniele AU - Villiseid, Miguel C2 - Metrologia DA - 2009-01-01 LA - en M1 - 46 PB - Metrologia PY - 2009 TI - Advice from the CCL on the use of unstabilized lasers as standards of wavelength: the helium-neon laser at 633 nm ER -