@misc{indiciaee648399e5b3f,
  title = {Acidity and alkalinity in mine drainage: Theoretical considerations},
  author = {Carl S. Kirby and Charles A. Cravotta},
  year = {2004},
  doi = {10.21000/jasmr04011076},
  url = {https://pubs.usgs.gov/publication/70189375},
  note = {Source identifier: 70189375}
}