@misc{indiciaece8a6ff7952c,
  title = {Letter: Optimal magnification for visual microscopy.},
  author = {W N Charman},
  year = {1974},
  doi = {10.1364/josa.64.000102},
  url = {https://pubmed.ncbi.nlm.nih.gov/4813432/},
  note = {Source identifier: 4813432}
}