TY - CONF A1 - Pradel, Rita A1 - Steiger, Thomas T1 - COMAR-the international database for certified reference materials T2 - IRMM-Workshop Selection and use of reference materials T2 - IRMM-Workshop Selection and use of reference materials CY - Geel, Belgium DA - 2004-10-12 PY - 2004 AN - OPUS4-4681 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -