@misc{indiciae1b44e8ed3561,
  title = {Osmium, ruthenium, iridium and uranium in silicates and chromite from the eastern Bushveld Complex, South Africa},
  author = {R.h. Gijbels and Hugh T. Millard and G. A. Desborough and A.J. Bartel},
  year = {1974},
  doi = {10.1016/0016-7037(74)90113-6},
  url = {https://pubs.usgs.gov/publication/70010059},
  note = {Source identifier: 70010059}
}