@misc{indiciaee36434bab6bd,
  title = {Direct parameter specification and the concept of perception.},
  author = {O Neumann},
  year = {1990},
  doi = {10.1007/bf00877529},
  url = {https://pubmed.ncbi.nlm.nih.gov/2281129/},
  note = {Source identifier: 2281129}
}