TY  - RPRT
TI  - Characterization and diagenesis of strong-acid carboxyl groups in humic substances
AU  - J.A. Leenheer
AU  - R.L. Wershaw
AU  - G.K. Brown
AU  - M.M. Reddy
PY  - 2003
DO  - 10.1016/s0883-2927(02)00100-2
UR  - https://pubs.usgs.gov/publication/70025964
ID  - 70025964
ER  -