@misc{indiciae6708ae1ee4f1,
  title = {Choice between single and multiple reinforcers in concurrent-chains schedules.},
  author = {James E Mazur},
  year = {2006},
  doi = {10.1901/jeab.2006.94-05},
  url = {https://pubmed.ncbi.nlm.nih.gov/17002228/},
  note = {Source identifier: 17002228}
}