@misc{indiciae14bc4174c26a,
  title = {The effect of morphine on fear extinction in rats.},
  author = {M D Morris and G F Gebhart},
  year = {1978},
  doi = {10.1007/bf00426749},
  url = {https://pubmed.ncbi.nlm.nih.gov/97707/},
  note = {Source identifier: 97707}
}