@misc{indiciae1b71aa8ea861,
  title = {First clinical tests using a liquid-filled electronic portal imaging device and a convolution model for the verification of the midplane dose.},
  author = {R Boellaard and M van Herk and H Uiterwaal and B Mijnheer},
  year = {1998},
  doi = {10.1016/s0167-8140(98)00008-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/9681895/},
  note = {Source identifier: 9681895}
}