@misc{indiciae49e905b12616,
  title = {Measurement theory.},
  author = {D E Krebs},
  year = {1987},
  doi = {10.1093/ptj/67.12.1834},
  url = {https://pubmed.ncbi.nlm.nih.gov/3685108/},
  note = {Source identifier: 3685108}
}