@misc{indiciae715eb6b8edbc,
  title = {Cu(II) binding by a pH-fractionated fulvic acid},
  author = {G.K. Brown and S.E. Cabaniss and P. MacCarthy and J.A. Leenheer},
  year = {1999},
  doi = {10.1016/s0003-2670(99)00521-8},
  url = {https://pubs.usgs.gov/publication/70021403},
  note = {Source identifier: 70021403}
}