@misc{indiciae675cbe1ae8c0,
  title = {Changeover ratio effects on concurrent variable-interval performance.},
  author = {J M White},
  year = {1979},
  doi = {10.1901/jeab.1979.31-239},
  url = {https://pubmed.ncbi.nlm.nih.gov/16812128/},
  note = {Source identifier: 16812128}
}