@misc{indiciae8184e172fd07,
  title = {PARTIAL NEGATIVE REINFORCEMENT: FIXED-RATIO ESCAPE.},
  author = {D P HENDRY and L S HENDRY},
  year = {1963},
  doi = {10.1901/jeab.1963.6-519},
  url = {https://pubmed.ncbi.nlm.nih.gov/14055946/},
  note = {Source identifier: 14055946}
}