@misc{indiciae014f9c3da2a7,
  title = {Thorium dioxide: still around.},
  author = {G Velasquez and C F Ward and S P Bohrer},
  year = {1985},
  doi = {10.1097/00007611-198506000-00033},
  url = {https://pubmed.ncbi.nlm.nih.gov/4002009/},
  note = {Source identifier: 4002009}
}