TY  - RPRT
TI  - Nicotine, acetanilide and urea multi-level 2 H-, 13 C- and 15 N-abundance reference materials for continuous-flow isotope ratio mass spectrometry
AU  - A. Schimmelmann
AU  - A. Albertino
AU  - P.E. Sauer
AU  - H. Qi
AU  - R. Molinie
AU  - F. Mesnard
PY  - 2009
DO  - 10.1002/rcm.4277
UR  - https://pubs.usgs.gov/publication/70035932
ID  - 70035932
ER  -