@misc{indiciaedccb111a2a5e,
  title = {Object reconstruction from focused positron tomograms.},
  author = {D Townsend and C Piney and A Jeavons},
  year = {1978},
  doi = {10.1088/0031-9155/23/2/002},
  url = {https://pubmed.ncbi.nlm.nih.gov/643919/},
  note = {Source identifier: 643919}
}