@misc{indiciae46ab86085454,
  title = {Phase-derivative imaging. I: Methods and stabilization analysis.},
  author = {R L Romijn and B J Oosterveld and J M Thijssen},
  year = {1987},
  doi = {10.1177/016173468700900301},
  url = {https://pubmed.ncbi.nlm.nih.gov/3445400/},
  note = {Source identifier: 3445400}
}