@misc{indiciaea6a9fc47eee1,
  title = {General activity as instrumental: application to avoidance training.},
  author = {V GRAF and M E BITTERMAN},
  year = {1963},
  doi = {10.1901/jeab.1963.6-301},
  url = {https://pubmed.ncbi.nlm.nih.gov/13949747/},
  note = {Source identifier: 13949747}
}