@misc{indiciae2e02524a6988,
  title = {Modification of electron microscope for electron optical shadow method.},
  author = {J A SIMPSON and A VAN BRONKHORST},
  year = {1950},
  doi = {10.1063/1.1745680},
  url = {https://pubmed.ncbi.nlm.nih.gov/15430699/},
  note = {Source identifier: 15430699}
}