@misc{indiciae542adb9bc56f,
  title = {Inverse planning for intensity-modulated arc therapy using direct aperture optimization.},
  author = {M A Earl and D M Shepard and S Naqvi and X A Li and C X Yu},
  year = {2003},
  doi = {10.1088/0031-9155/48/8/309},
  url = {https://pubmed.ncbi.nlm.nih.gov/12741503/},
  note = {Source identifier: 12741503}
}