TY - JOUR A1 - Steiger, Thomas A1 - Pradel, Rita T1 - COMARĀ² - the internet database for certified reference materials JF - Analytical and bioanalytical chemistry PY - 2004 SN - 1618-2642 SN - 1618-2650 VL - 378 IS - 5 SP - 1145 EP - 1146 PB - Springer CY - Berlin AN - OPUS4-3325 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -