@misc{indiciae4afa4c8aa40a,
  title = {Spectrophotometric determination of micro quantities of zinc in rocks},
  author = {C. Huffman and H. H. Lipp and L. F. Rader},
  year = {1963},
  doi = {10.1016/0016-7037(63)90023-1},
  url = {https://pubs.usgs.gov/publication/70009999},
  note = {Source identifier: 70009999}
}