@misc{indiciaeb946a240a810,
  title = {Seasonal variations of Zn/Cu ratios in acid mine water from Iron Mountain, California},
  author = {Charles N. Alpers and D. Kirk Nordstrom and J. Michael Thompson},
  year = {2009},
  doi = {10.1021/bk-1994-0550.ch022},
  url = {https://pubs.usgs.gov/publication/70199881},
  note = {Source identifier: 70199881}
}