@misc{indiciae464c1647910c,
  title = {Simple modifications in phase-contrast technic.},
  author = {D H TAYSUM},
  year = {1957},
  doi = {10.3109/10520295709111397},
  url = {https://pubmed.ncbi.nlm.nih.gov/13391329/},
  note = {Source identifier: 13391329}
}