@misc{indiciae809de2664ca3,
  title = {The reinforcement difference limen (RDL) function for shock reduction.},
  author = {B A CAMPBELL},
  year = {1956},
  doi = {10.1037/h0048706},
  url = {https://pubmed.ncbi.nlm.nih.gov/13367349/},
  note = {Source identifier: 13367349}
}