TY - JOUR AU - James Fedchak AU - Blaza Toman AU - Karl Jousten C2 - Metrologia DA - 2013-01-01 DO - https://doi.org/10.1088/0026-1394/50/1A/07001 LA - en M1 - 50 PB - Metrologia PY - 2013 TI - Final report of key comparison CCM.P-K12 for very low helium flow rates (leak rates) ER -