@misc{indiciae3539dc52135d,
  title = {An adjustable synchronized electron flash for phase contrast micrography.},
  author = {J P SCHADE and F de WAAL},
  year = {1960},
  doi = {10.1007/bf02157736},
  url = {https://pubmed.ncbi.nlm.nih.gov/14442303/},
  note = {Source identifier: 14442303}
}