@misc{indiciae78c7742952c1,
  title = {Simultaneous generalization gradients for appetitive and aversive behavior.},
  author = {E HEARST},
  year = {1960},
  doi = {10.1126/science.132.3441.1769},
  url = {https://pubmed.ncbi.nlm.nih.gov/13712603/},
  note = {Source identifier: 13712603}
}