@misc{indiciaef319b1333cd3,
  title = {Response strength as a function of changed intertrial interval.},
  author = {C B ERNHART},
  year = {1960},
  doi = {10.1037/h0044660},
  url = {https://pubmed.ncbi.nlm.nih.gov/13697233/},
  note = {Source identifier: 13697233}
}