@misc{indiciae1e1922371224,
  title = {Modeling electrostatic and heterogeneity effects on proton dissociation from humic substances},
  author = {E. Tipping and M.M. Reddy and M.A. Hurley},
  year = {2002},
  doi = {10.1021/es00081a012},
  url = {https://pubs.usgs.gov/publication/70016066},
  note = {Source identifier: 70016066}
}