@misc{indiciaedfc5ab07f19e,
  title = {Method and theory in the study of avoidance.},
  author = {R J Herrnstein},
  year = {1969},
  doi = {10.1037/h0026786},
  url = {https://pubmed.ncbi.nlm.nih.gov/5353378/},
  note = {Source identifier: 5353378}
}