@misc{indiciae2a6be17e3e45,
  title = {Intensity-modulated radiation therapy using a variable-aperture collimator.},
  author = {S Webb and G Hartmann and G Echner and W Schlegel},
  year = {2003},
  doi = {10.1088/0031-9155/48/9/310},
  url = {https://pubmed.ncbi.nlm.nih.gov/12765333/},
  note = {Source identifier: 12765333}
}