@misc{indiciae2b74ffb3ba95,
  title = {The total unsharpness in radiography.},
  author = {P Spiegler and A Norman},
  year = {1973},
  doi = {10.1088/0031-9155/18/6/312},
  url = {https://pubmed.ncbi.nlm.nih.gov/4778452/},
  note = {Source identifier: 4778452}
}