TY - GEN A1 - Ullner, Christian A1 - Vogt, C.-Ch. A1 - Frenz, H. ED - Richter, D. ED - Wöger, W. ED - Hässelbarth, W. T1 - Special features in proficiency tests of mechanical testing laboratories T2 - 178. PTB-Seminar CY - Braunschweig, Germany DA - 2003-01-01 PY - 2003 SN - 3-89701-966-3 SN - 0942-1785 N1 - Serientitel: PTB-Bericht : IT, Informationstechnik – Series title: PTB-Bericht : IT, Informationstechnik IS - 10 SP - 47 EP - 53 PB - Wirtschaftsverl. NW CY - Bremerhaven AN - OPUS4-2721 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -