@misc{indiciaecb8a5d3363d8,
  title = {Simultaneous second-order conditioning produces S-S learning in conditioned suppression.},
  author = {R A Rescorla},
  year = {1982},
  url = {https://pubmed.ncbi.nlm.nih.gov/7057142/},
  note = {Source identifier: 7057142}
}