@misc{indiciaedc8ad8bd948d,
  title = {Compensated polarised microscopy: a simple and cheap modification.},
  author = {K Veerapen and C S Ling},
  year = {1987},
  url = {https://pubmed.ncbi.nlm.nih.gov/3509837/},
  note = {Source identifier: 3509837}
}