@misc{indiciaef81f7dd571eb,
  title = {Concurrent responses during multiple schedules in rats.},
  author = {I H Iversen},
  year = {1975},
  doi = {10.1111/j.1467-9450.1975.tb00163.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/1138344/},
  note = {Source identifier: 1138344}
}