@misc{indiciaee2c3498d4abe,
  title = {A simple algorithm for planar image registration in radiation therapy.},
  author = {J Cai and J C Chu and V A Saxena and L H Lanzl},
  year = {1998},
  doi = {10.1118/1.598292},
  url = {https://pubmed.ncbi.nlm.nih.gov/9650169/},
  note = {Source identifier: 9650169}
}