@misc{indiciae45ee05d0ae8e,
  title = {Operational specificity: implications for field-based replications.},
  author = {K R Derer},
  year = {1985},
  doi = {10.1016/0005-7916(85)90024-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/3998180/},
  note = {Source identifier: 3998180}
}