@misc{indiciae9d5066d53f60,
  title = {A phantom for beam positioning and visualization.},
  author = {M K Woo and S Wong},
  year = {1993},
  doi = {10.1016/0360-3016(93)90290-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/8331002/},
  note = {Source identifier: 8331002}
}