@misc{indiciaebcd6e54c2037,
  title = {The zeiss-Nomarski differential interference equipment for transmitted-light microscopy.},
  author = {R D Allen and G B David and G Nomarski},
  year = {1969},
  url = {https://pubmed.ncbi.nlm.nih.gov/5361069/},
  note = {Source identifier: 5361069}
}