@misc{indiciaec2d5516cd748,
  title = {Schedule-induced aggression as a function of fixed-ratio value.},
  author = {D R Cherek and R Pickens},
  year = {1970},
  doi = {10.1901/jeab.1970.14-309},
  url = {https://pubmed.ncbi.nlm.nih.gov/5530984/},
  note = {Source identifier: 5530984}
}