TY - RPRT TI - Assessment of international reference materials for isotope-ratio analysis (IUPAC Technical Report) AU - Willi A. Brand AU - Tyler B. Coplen AU - Jochen Vogl AU - Martin Rosner AU - Thomas Prohaska PY - 2014 DO - 10.1515/pac-2013-1023 UR - https://pubs.usgs.gov/publication/70095725 ID - 70095725 ER -