@misc{indiciae241c7311d45b,
  title = {A new theory on the image producing elements in pantomographic methods.},
  author = {O Nyström and U Welander},
  year = {1972},
  doi = {10.1259/dmfr.1972.0002},
  url = {https://pubmed.ncbi.nlm.nih.gov/4510441/},
  note = {Source identifier: 4510441}
}