@misc{indiciae8697ea39a9e4,
  title = {Collimating system for electron beams.},
  author = {B Lindskoug and A Dahler},
  year = {1971},
  doi = {10.3109/02841867109130791},
  url = {https://pubmed.ncbi.nlm.nih.gov/5165360/},
  note = {Source identifier: 5165360}
}