@misc{indiciaec69213c8167d,
  title = {An electromechanical optical shutter.},
  author = {P Naish},
  year = {1979},
  doi = {10.1088/0022-3735/12/8/003},
  url = {https://pubmed.ncbi.nlm.nih.gov/469711/},
  note = {Source identifier: 469711}
}