@misc{indiciae2903f16f127b,
  title = {Atomic absorption spectrometric determination of copper, zinc, and lead in geological materials},
  author = {R. F. Sanzolone and T. T. Chao},
  year = {1976},
  doi = {10.1016/s0003-2670(01)83030-0},
  url = {https://pubs.usgs.gov/publication/70010914},
  note = {Source identifier: 70010914}
}