@misc{indiciaef94b34cec2d6,
  title = {Volitional ethanol increases during acquisition and extinction of avoidance responding.},
  author = {C A Opsahl and G I Hatton},
  year = {1972},
  doi = {10.1016/0031-9384(72)90133-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/4677201/},
  note = {Source identifier: 4677201}
}