TY - CONF A1 - Vogl, Jochen T1 - Reference material characterization by IDMS applying multi collector instruments T2 - BERM 11 T2 - BERM 11 CY - Tsukuba, Japan DA - 2007-10-29 PY - 2007 AN - OPUS4-16306 LA - deu AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -