@misc{indiciaed76d14a46e56,
  title = {Wall-scattering effects in electron beam collimation.},
  author = {R van der Laarse and I A Bruinvis and M F Nooman},
  year = {1978},
  doi = {10.3109/02841867809127912},
  url = {https://pubmed.ncbi.nlm.nih.gov/99983/},
  note = {Source identifier: 99983}
}