@misc{indiciae2b1db43b03aa,
  title = {[Experiments on binary classification of patterns by man].},
  author = {H Niemann and H J Reinig},
  year = {1972},
  doi = {10.1007/bf00267764},
  url = {https://pubmed.ncbi.nlm.nih.gov/5052989/},
  note = {Source identifier: 5052989}
}