@misc{indiciae3bce1f695e19,
  title = {Two-key concurrent responding: response-reinforcement dependencies and blackouts.},
  author = {E W Herbert},
  year = {1970},
  doi = {10.1901/jeab.1970.14-61},
  url = {https://pubmed.ncbi.nlm.nih.gov/16811458/},
  note = {Source identifier: 16811458}
}