@misc{indiciaeabc6e2e0149c,
  title = {A concept for a floating circle target tracker.},
  author = {J H de Vries},
  year = {1980},
  doi = {10.1007/bf02443297},
  url = {https://pubmed.ncbi.nlm.nih.gov/7392687/},
  note = {Source identifier: 7392687}
}