@misc{indiciae8f15f10fa91d,
  title = {LEVER DISPLACEMENT UNDER A VARIABLE RATIO SCHEDULE AND SUBSEQUENT EXTINCTION.},
  author = {R M HERRICK and R A BROMBERGER},
  year = {1965},
  doi = {10.1037/h0022063},
  url = {https://pubmed.ncbi.nlm.nih.gov/14313779/},
  note = {Source identifier: 14313779}
}