TY - GEN A1 - Hässelbarth, Werner A1 - Bremser, Wolfram T1 - Derived measurement standards of reduced uncertainty - A contradiction? T2 - Métrologie 99 T2 - 9e Congrès International Métrologie ; 9th International Metrology Congress CY - Bordeaux, France DA - 1999-10-18 PY - 1999 SN - 2-909430-88-X SP - 651 EP - 654 PB - MFQ, Collège Métrologie CY - Nanterre AN - OPUS4-2562 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -