@misc{indiciae117929d63ca7,
  title = {An analytical reconstruction algorithm for multifocal converging-beam SPECT.},
  author = {Z J Cao and B M Tsui},
  year = {1994},
  doi = {10.1088/0031-9155/39/2/005},
  url = {https://pubmed.ncbi.nlm.nih.gov/15552125/},
  note = {Source identifier: 15552125}
}