@misc{indiciae453000fa1971,
  title = {Free-operant choice behavior: A molecular analysis.},
  author = {D J Navarick},
  year = {1979},
  doi = {10.1901/jeab.1979.32-213},
  url = {https://pubmed.ncbi.nlm.nih.gov/16812148/},
  note = {Source identifier: 16812148}
}