@misc{indiciae0f801b1b782d,
  title = {An attenuated projector-backprojector for iterative SPECT reconstruction.},
  author = {G T Gullberg and R H Huesman and J A Malko and N J Pelc and T F Budinger},
  year = {1985},
  doi = {10.1088/0031-9155/30/8/004},
  url = {https://pubmed.ncbi.nlm.nih.gov/3840265/},
  note = {Source identifier: 3840265}
}