@misc{indiciae32d8234e0356,
  title = {Behavioral interaction under concurrent spaced-responding, variable-interval schedules of reinforcement.},
  author = {E F SEGAL},
  year = {1961},
  doi = {10.1901/jeab.1961.4-263},
  url = {https://pubmed.ncbi.nlm.nih.gov/13749652/},
  note = {Source identifier: 13749652}
}