@misc{indiciae358e1add3639,
  title = {Some issues in evaluating programs.},
  author = {J Jackson},
  year = {1967},
  doi = {10.1176/ps.18.6.161},
  url = {https://pubmed.ncbi.nlm.nih.gov/6041923/},
  note = {Source identifier: 6041923}
}