@misc{indiciaed3c1d2e87e10,
  title = {Adjustment of geochemical background by robust multivariate statistics},
  author = {D. Zhou},
  year = {1985},
  doi = {10.1016/0375-6742(85)90046-9},
  url = {https://pubs.usgs.gov/publication/70012971},
  note = {Source identifier: 70012971}
}