TY  - RPRT
TI  - Chitin: 'Forgotten' source of nitrogen: From modern chitin to thermally mature kerogen: Lessons from nitrogen isotope ratios
AU  - A. Schimmelmann
AU  - R. P. Wintsch
AU  - M. D. Lewan
AU  - M. J. DeNiro
PY  - 2009
DO  - 10.1021/bk-1998-0707.ch013
UR  - https://pubs.usgs.gov/publication/70020401
ID  - 70020401
ER  -