@misc{indiciaec3fe8cbfb7cc,
  title = {Two quantitative measures of skill development.},
  author = {R W Pew and G L Rupp},
  year = {1971},
  doi = {10.1037/h0031429},
  url = {https://pubmed.ncbi.nlm.nih.gov/5096126/},
  note = {Source identifier: 5096126}
}