@misc{indiciae9e37da9c059b,
  title = {Dose preference during pentobarbital self-administration by humans.},
  author = {R Pickens and M R Cunningham and L L Heston and E Eckert and L K Gustafson},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/909065/},
  note = {Source identifier: 909065}
}